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Finding the Fourth Proportional to 66,599.40, 91,821.42 and 47,500.95

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Solution

The fourth proportional to 66,599.40, 91,821.42 and 47,500.95 is: 65,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,599.40 : 91,821.42 = 47,500.95 : x
  2. Step 2: Convert to fraction form
    66,599.40/91,821.42 = 47,500.95/x
  3. Step 3: Cross multiply
    66,599.40x = 91,821.42 × 47,500.95
  4. Step 4: Simplify right side
    66,599.40x = 4,361,604,680.35
  5. Step 5: Solve for x
    x = 4,361,604,680.35/66,599.40
  6. Step 6: Final answer
    x = 65,490.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.