Home / 81,023,335,489.12-121,523,970,643.33-21,326,998,758.50

Finding the Fourth Proportional to 81,023,335,489.12, 121,523,970,643.33 and 21,326,998,758.50

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Solution

The fourth proportional to 81,023,335,489.12, 121,523,970,643.33 and 21,326,998,758.50 is: 31,987,594,134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,023,335,489.12 : 121,523,970,643.33 = 21,326,998,758.50 : x
  2. Step 2: Convert to fraction form
    81,023,335,489.12/121,523,970,643.33 = 21,326,998,758.50/x
  3. Step 3: Cross multiply
    81,023,335,489.12x = 121,523,970,643.33 × 21,326,998,758.50
  4. Step 4: Simplify right side
    81,023,335,489.12x = 2,591,741,571,038,532,075,520
  5. Step 5: Solve for x
    x = 2,591,741,571,038,532,075,520/81,023,335,489.12
  6. Step 6: Final answer
    x = 31,987,594,134.36

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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.