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Finding the Fourth Proportional to 51,385.52, 70,910.52 and 28,724.55

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Solution

The fourth proportional to 51,385.52, 70,910.52 and 28,724.55 is: 39,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,385.52 : 70,910.52 = 28,724.55 : x
  2. Step 2: Convert to fraction form
    51,385.52/70,910.52 = 28,724.55/x
  3. Step 3: Cross multiply
    51,385.52x = 70,910.52 × 28,724.55
  4. Step 4: Simplify right side
    51,385.52x = 2,036,872,777.27
  5. Step 5: Solve for x
    x = 2,036,872,777.27/51,385.52
  6. Step 6: Final answer
    x = 39,639.04

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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.