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Finding the Fourth Proportional to 66,007.80, 99,011.70 and 36,483.30

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Solution

The fourth proportional to 66,007.80, 99,011.70 and 36,483.30 is: 54,724.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,007.80 : 99,011.70 = 36,483.30 : x
  2. Step 2: Convert to fraction form
    66,007.80/99,011.70 = 36,483.30/x
  3. Step 3: Cross multiply
    66,007.80x = 99,011.70 × 36,483.30
  4. Step 4: Simplify right side
    66,007.80x = 3,612,273,554.61
  5. Step 5: Solve for x
    x = 3,612,273,554.61/66,007.80
  6. Step 6: Final answer
    x = 54,724.95

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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.