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Finding the Fourth Proportional to 66,360.87, 99,388.22 and 40,007.52

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Solution

The fourth proportional to 66,360.87, 99,388.22 and 40,007.52 is: 59,918.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,360.87 : 99,388.22 = 40,007.52 : x
  2. Step 2: Convert to fraction form
    66,360.87/99,388.22 = 40,007.52/x
  3. Step 3: Cross multiply
    66,360.87x = 99,388.22 × 40,007.52
  4. Step 4: Simplify right side
    66,360.87x = 3,976,275,999.38
  5. Step 5: Solve for x
    x = 3,976,275,999.38/66,360.87
  6. Step 6: Final answer
    x = 59,918.99

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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.