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Finding the Fourth Proportional to 145,046.52, 217,572.18 and 39,864.84

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Solution

The fourth proportional to 145,046.52, 217,572.18 and 39,864.84 is: 59,797.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,046.52 : 217,572.18 = 39,864.84 : x
  2. Step 2: Convert to fraction form
    145,046.52/217,572.18 = 39,864.84/x
  3. Step 3: Cross multiply
    145,046.52x = 217,572.18 × 39,864.84
  4. Step 4: Simplify right side
    145,046.52x = 8,673,480,144.15
  5. Step 5: Solve for x
    x = 8,673,480,144.15/145,046.52
  6. Step 6: Final answer
    x = 59,797.92

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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.