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Finding the Fourth Proportional to 98,892.60, 148,335.30 and 39,712.20

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Solution

The fourth proportional to 98,892.60, 148,335.30 and 39,712.20 is: 59,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,892.60 : 148,335.30 = 39,712.20 : x
  2. Step 2: Convert to fraction form
    98,892.60/148,335.30 = 39,712.20/x
  3. Step 3: Cross multiply
    98,892.60x = 148,335.30 × 39,712.20
  4. Step 4: Simplify right side
    98,892.60x = 5,890,721,100.66
  5. Step 5: Solve for x
    x = 5,890,721,100.66/98,892.60
  6. Step 6: Final answer
    x = 59,566.85

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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.