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Finding the Fourth Proportional to 52,863.68, 72,952.61 and 28,988.78

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Solution

The fourth proportional to 52,863.68, 72,952.61 and 28,988.78 is: 40,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,863.68 : 72,952.61 = 28,988.78 : x
  2. Step 2: Convert to fraction form
    52,863.68/72,952.61 = 28,988.78/x
  3. Step 3: Cross multiply
    52,863.68x = 72,952.61 × 28,988.78
  4. Step 4: Simplify right side
    52,863.68x = 2,114,806,652.01
  5. Step 5: Solve for x
    x = 2,114,806,652.01/52,863.68
  6. Step 6: Final answer
    x = 40,004.91

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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.