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Finding the Fourth Proportional to 64,872.42, 89,564.80 and 49,737.02

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Solution

The fourth proportional to 64,872.42, 89,564.80 and 49,737.02 is: 68,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.42 : 89,564.80 = 49,737.02 : x
  2. Step 2: Convert to fraction form
    64,872.42/89,564.80 = 49,737.02/x
  3. Step 3: Cross multiply
    64,872.42x = 89,564.80 × 49,737.02
  4. Step 4: Simplify right side
    64,872.42x = 4,454,686,248.90
  5. Step 5: Solve for x
    x = 4,454,686,248.90/64,872.42
  6. Step 6: Final answer
    x = 68,668.41

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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.