Home / 80,740,938.60-121,111,407.90-72,006,935.40

Finding the Fourth Proportional to 80,740,938.60, 121,111,407.90 and 72,006,935.40

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Solution

The fourth proportional to 80,740,938.60, 121,111,407.90 and 72,006,935.40 is: 108,010,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,740,938.60 : 121,111,407.90 = 72,006,935.40 : x
  2. Step 2: Convert to fraction form
    80,740,938.60/121,111,407.90 = 72,006,935.40/x
  3. Step 3: Cross multiply
    80,740,938.60x = 121,111,407.90 × 72,006,935.40
  4. Step 4: Simplify right side
    80,740,938.60x = 8,720,861,324,858,351
  5. Step 5: Solve for x
    x = 8,720,861,324,858,351/80,740,938.60
  6. Step 6: Final answer
    x = 108,010,403.10

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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.