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Finding the Fourth Proportional to 82,647,598.88, 123,971,397.68 and 30,129,209.12

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Solution

The fourth proportional to 82,647,598.88, 123,971,397.68 and 30,129,209.12 is: 45,193,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,647,598.88 : 123,971,397.68 = 30,129,209.12 : x
  2. Step 2: Convert to fraction form
    82,647,598.88/123,971,397.68 = 30,129,209.12/x
  3. Step 3: Cross multiply
    82,647,598.88x = 123,971,397.68 × 30,129,209.12
  4. Step 4: Simplify right side
    82,647,598.88x = 3,735,160,165,599,403
  5. Step 5: Solve for x
    x = 3,735,160,165,599,403/82,647,598.88
  6. Step 6: Final answer
    x = 45,193,813.45

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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.