Home / 57,087,229.50-78,780,417.21-30,981,741.12

Finding the Fourth Proportional to 57,087,229.50, 78,780,417.21 and 30,981,741.12

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Solution

The fourth proportional to 57,087,229.50, 78,780,417.21 and 30,981,741.12 is: 42,754,824.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,087,229.50 : 78,780,417.21 = 30,981,741.12 : x
  2. Step 2: Convert to fraction form
    57,087,229.50/78,780,417.21 = 30,981,741.12/x
  3. Step 3: Cross multiply
    57,087,229.50x = 78,780,417.21 × 30,981,741.12
  4. Step 4: Simplify right side
    57,087,229.50x = 2,440,754,491,325,812.50
  5. Step 5: Solve for x
    x = 2,440,754,491,325,812.50/57,087,229.50
  6. Step 6: Final answer
    x = 42,754,824.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.