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Finding the Fourth Proportional to 66,915.84, 100,341.98 and 38,844.51

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Solution

The fourth proportional to 66,915.84, 100,341.98 and 38,844.51 is: 58,248.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.84 : 100,341.98 = 38,844.51 : x
  2. Step 2: Convert to fraction form
    66,915.84/100,341.98 = 38,844.51/x
  3. Step 3: Cross multiply
    66,915.84x = 100,341.98 × 38,844.51
  4. Step 4: Simplify right side
    66,915.84x = 3,897,734,349.60
  5. Step 5: Solve for x
    x = 3,897,734,349.60/66,915.84
  6. Step 6: Final answer
    x = 58,248.31

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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.