Home / 81,023,335,499.63-121,523,970,659.08-21,326,998,769.03

Finding the Fourth Proportional to 81,023,335,499.63, 121,523,970,659.08 and 21,326,998,769.03

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Solution

The fourth proportional to 81,023,335,499.63, 121,523,970,659.08 and 21,326,998,769.03 is: 31,987,594,150.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,023,335,499.63 : 121,523,970,659.08 = 21,326,998,769.03 : x
  2. Step 2: Convert to fraction form
    81,023,335,499.63/121,523,970,659.08 = 21,326,998,769.03/x
  3. Step 3: Cross multiply
    81,023,335,499.63x = 121,523,970,659.08 × 21,326,998,769.03
  4. Step 4: Simplify right side
    81,023,335,499.63x = 2,591,741,572,653,229,539,328
  5. Step 5: Solve for x
    x = 2,591,741,572,653,229,539,328/81,023,335,499.63
  6. Step 6: Final answer
    x = 31,987,594,150.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.