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Finding the Fourth Proportional to 66,167.40, 99,251.10 and 39,923.40

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Solution

The fourth proportional to 66,167.40, 99,251.10 and 39,923.40 is: 59,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,167.40 : 99,251.10 = 39,923.40 : x
  2. Step 2: Convert to fraction form
    66,167.40/99,251.10 = 39,923.40/x
  3. Step 3: Cross multiply
    66,167.40x = 99,251.10 × 39,923.40
  4. Step 4: Simplify right side
    66,167.40x = 3,962,441,365.74
  5. Step 5: Solve for x
    x = 3,962,441,365.74/66,167.40
  6. Step 6: Final answer
    x = 59,885.10

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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.