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Finding the Fourth Proportional to 66,658.32, 100,024.38 and 39,938.65

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Solution

The fourth proportional to 66,658.32, 100,024.38 and 39,938.65 is: 59,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,658.32 : 100,024.38 = 39,938.65 : x
  2. Step 2: Convert to fraction form
    66,658.32/100,024.38 = 39,938.65/x
  3. Step 3: Cross multiply
    66,658.32x = 100,024.38 × 39,938.65
  4. Step 4: Simplify right side
    66,658.32x = 3,994,838,454.23
  5. Step 5: Solve for x
    x = 3,994,838,454.23/66,658.32
  6. Step 6: Final answer
    x = 59,930.08

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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.