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Finding the Fourth Proportional to 83,119,978.20, 124,691,777.10 and 25,606,252.20

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Solution

The fourth proportional to 83,119,978.20, 124,691,777.10 and 25,606,252.20 is: 38,413,016.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,119,978.20 : 124,691,777.10 = 25,606,252.20 : x
  2. Step 2: Convert to fraction form
    83,119,978.20/124,691,777.10 = 25,606,252.20/x
  3. Step 3: Cross multiply
    83,119,978.20x = 124,691,777.10 × 25,606,252.20
  4. Step 4: Simplify right side
    83,119,978.20x = 3,192,889,091,688,784.50
  5. Step 5: Solve for x
    x = 3,192,889,091,688,784.50/83,119,978.20
  6. Step 6: Final answer
    x = 38,413,016.47

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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.