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Finding the Fourth Proportional to 64,379.61, 96,306.77 and 51,913.71

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Solution

The fourth proportional to 64,379.61, 96,306.77 and 51,913.71 is: 77,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,379.61 : 96,306.77 = 51,913.71 : x
  2. Step 2: Convert to fraction form
    64,379.61/96,306.77 = 51,913.71/x
  3. Step 3: Cross multiply
    64,379.61x = 96,306.77 × 51,913.71
  4. Step 4: Simplify right side
    64,379.61x = 4,999,641,858.60
  5. Step 5: Solve for x
    x = 4,999,641,858.60/64,379.61
  6. Step 6: Final answer
    x = 77,658.78

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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.