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Finding the Fourth Proportional to 272,031.70, 408,047.55 and 85,062.10

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Solution

The fourth proportional to 272,031.70, 408,047.55 and 85,062.10 is: 127,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,031.70 : 408,047.55 = 85,062.10 : x
  2. Step 2: Convert to fraction form
    272,031.70/408,047.55 = 85,062.10/x
  3. Step 3: Cross multiply
    272,031.70x = 408,047.55 × 85,062.10
  4. Step 4: Simplify right side
    272,031.70x = 34,709,381,502.86
  5. Step 5: Solve for x
    x = 34,709,381,502.86/272,031.70
  6. Step 6: Final answer
    x = 127,593.15

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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.