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Finding the Fourth Proportional to 66,423.60, 99,635.40 and 63,658.80

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Solution

The fourth proportional to 66,423.60, 99,635.40 and 63,658.80 is: 95,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423.60 : 99,635.40 = 63,658.80 : x
  2. Step 2: Convert to fraction form
    66,423.60/99,635.40 = 63,658.80/x
  3. Step 3: Cross multiply
    66,423.60x = 99,635.40 × 63,658.80
  4. Step 4: Simplify right side
    66,423.60x = 6,342,670,001.52
  5. Step 5: Solve for x
    x = 6,342,670,001.52/66,423.60
  6. Step 6: Final answer
    x = 95,488.20

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1.5x scale

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.