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Finding the Fourth Proportional to 66,232.60, 99,291.30 and 39,909.40

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Solution

The fourth proportional to 66,232.60, 99,291.30 and 39,909.40 is: 59,829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,232.60 : 99,291.30 = 39,909.40 : x
  2. Step 2: Convert to fraction form
    66,232.60/99,291.30 = 39,909.40/x
  3. Step 3: Cross multiply
    66,232.60x = 99,291.30 × 39,909.40
  4. Step 4: Simplify right side
    66,232.60x = 3,962,656,208.22
  5. Step 5: Solve for x
    x = 3,962,656,208.22/66,232.60
  6. Step 6: Final answer
    x = 59,829.39

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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.