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Finding the Fourth Proportional to 64,602.85, 96,923.10 and 39,658.90

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Solution

The fourth proportional to 64,602.85, 96,923.10 and 39,658.90 is: 59,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,602.85 : 96,923.10 = 39,658.90 : x
  2. Step 2: Convert to fraction form
    64,602.85/96,923.10 = 39,658.90/x
  3. Step 3: Cross multiply
    64,602.85x = 96,923.10 × 39,658.90
  4. Step 4: Simplify right side
    64,602.85x = 3,843,863,530.59
  5. Step 5: Solve for x
    x = 3,843,863,530.59/64,602.85
  6. Step 6: Final answer
    x = 59,499.91

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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.