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Finding the Fourth Proportional to 65,717.78, 90,658.02 and 38,847.38

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Solution

The fourth proportional to 65,717.78, 90,658.02 and 38,847.38 is: 53,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,717.78 : 90,658.02 = 38,847.38 : x
  2. Step 2: Convert to fraction form
    65,717.78/90,658.02 = 38,847.38/x
  3. Step 3: Cross multiply
    65,717.78x = 90,658.02 × 38,847.38
  4. Step 4: Simplify right side
    65,717.78x = 3,521,826,552.99
  5. Step 5: Solve for x
    x = 3,521,826,552.99/65,717.78
  6. Step 6: Final answer
    x = 53,590.16

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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.