Home / 52,489.12-72,432.80-28,615.28

Finding the Fourth Proportional to 52,489.12, 72,432.80 and 28,615.28

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Solution

The fourth proportional to 52,489.12, 72,432.80 and 28,615.28 is: 39,487.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,489.12 : 72,432.80 = 28,615.28 : x
  2. Step 2: Convert to fraction form
    52,489.12/72,432.80 = 28,615.28/x
  3. Step 3: Cross multiply
    52,489.12x = 72,432.80 × 28,615.28
  4. Step 4: Simplify right side
    52,489.12x = 2,072,684,853.18
  5. Step 5: Solve for x
    x = 2,072,684,853.18/52,489.12
  6. Step 6: Final answer
    x = 39,487.89

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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.