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Finding the Fourth Proportional to 61,152.92, 91,737.88 and 21,700.65

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Solution

The fourth proportional to 61,152.92, 91,737.88 and 21,700.65 is: 32,553.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,152.92 : 91,737.88 = 21,700.65 : x
  2. Step 2: Convert to fraction form
    61,152.92/91,737.88 = 21,700.65/x
  3. Step 3: Cross multiply
    61,152.92x = 91,737.88 × 21,700.65
  4. Step 4: Simplify right side
    61,152.92x = 1,990,771,571.37
  5. Step 5: Solve for x
    x = 1,990,771,571.37/61,152.92
  6. Step 6: Final answer
    x = 32,553.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.