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Finding the Fourth Proportional to 52,560.78, 72,531.15 and 28,686.30

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Solution

The fourth proportional to 52,560.78, 72,531.15 and 28,686.30 is: 39,585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,560.78 : 72,531.15 = 28,686.30 : x
  2. Step 2: Convert to fraction form
    52,560.78/72,531.15 = 28,686.30/x
  3. Step 3: Cross multiply
    52,560.78x = 72,531.15 × 28,686.30
  4. Step 4: Simplify right side
    52,560.78x = 2,080,650,328.25
  5. Step 5: Solve for x
    x = 2,080,650,328.25/52,560.78
  6. Step 6: Final answer
    x = 39,585.61

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1.5x scale

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.