Home / 80,779,034,021.60-121,168,551,032.40-54,331,128,639.20

Finding the Fourth Proportional to 80,779,034,021.60, 121,168,551,032.40 and 54,331,128,639.20

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Solution

The fourth proportional to 80,779,034,021.60, 121,168,551,032.40 and 54,331,128,639.20 is: 81,496,692,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,779,034,021.60 : 121,168,551,032.40 = 54,331,128,639.20 : x
  2. Step 2: Convert to fraction form
    80,779,034,021.60/121,168,551,032.40 = 54,331,128,639.20/x
  3. Step 3: Cross multiply
    80,779,034,021.60x = 121,168,551,032.40 × 54,331,128,639.20
  4. Step 4: Simplify right side
    80,779,034,021.60x = 6,583,224,133,166,794,014,720
  5. Step 5: Solve for x
    x = 6,583,224,133,166,794,014,720/80,779,034,021.60
  6. Step 6: Final answer
    x = 81,496,692,958.80

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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.