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Finding the Fourth Proportional to 66,549.69, 99,824.54 and 38,828.25

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Solution

The fourth proportional to 66,549.69, 99,824.54 and 38,828.25 is: 58,242.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,549.69 : 99,824.54 = 38,828.25 : x
  2. Step 2: Convert to fraction form
    66,549.69/99,824.54 = 38,828.25/x
  3. Step 3: Cross multiply
    66,549.69x = 99,824.54 × 38,828.25
  4. Step 4: Simplify right side
    66,549.69x = 3,876,012,001.11
  5. Step 5: Solve for x
    x = 3,876,012,001.11/66,549.69
  6. Step 6: Final answer
    x = 58,242.38

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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.