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Finding the Fourth Proportional to 98,881.32, 148,321.89 and 39,717

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Solution

The fourth proportional to 98,881.32, 148,321.89 and 39,717 is: 59,575.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,881.32 : 148,321.89 = 39,717 : x
  2. Step 2: Convert to fraction form
    98,881.32/148,321.89 = 39,717/x
  3. Step 3: Cross multiply
    98,881.32x = 148,321.89 × 39,717
  4. Step 4: Simplify right side
    98,881.32x = 5,890,900,505.13
  5. Step 5: Solve for x
    x = 5,890,900,505.13/98,881.32
  6. Step 6: Final answer
    x = 59,575.46

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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.