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Finding the Fourth Proportional to 72,502.10, 100,006.82 and 52,388.52

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Solution

The fourth proportional to 72,502.10, 100,006.82 and 52,388.52 is: 72,262.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502.10 : 100,006.82 = 52,388.52 : x
  2. Step 2: Convert to fraction form
    72,502.10/100,006.82 = 52,388.52/x
  3. Step 3: Cross multiply
    72,502.10x = 100,006.82 × 52,388.52
  4. Step 4: Simplify right side
    72,502.10x = 5,239,209,289.71
  5. Step 5: Solve for x
    x = 5,239,209,289.71/72,502.10
  6. Step 6: Final answer
    x = 72,262.86

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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.