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Finding the Fourth Proportional to 90,737.56, 125,187.86 and 54,913.96

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Solution

The fourth proportional to 90,737.56, 125,187.86 and 54,913.96 is: 75,763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,737.56 : 125,187.86 = 54,913.96 : x
  2. Step 2: Convert to fraction form
    90,737.56/125,187.86 = 54,913.96/x
  3. Step 3: Cross multiply
    90,737.56x = 125,187.86 × 54,913.96
  4. Step 4: Simplify right side
    90,737.56x = 6,874,561,136.53
  5. Step 5: Solve for x
    x = 6,874,561,136.53/90,737.56
  6. Step 6: Final answer
    x = 75,763.13

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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.