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Finding the Fourth Proportional to 92,375.60, 138,217.40 and 65,783.04

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Solution

The fourth proportional to 92,375.60, 138,217.40 and 65,783.04 is: 98,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,375.60 : 138,217.40 = 65,783.04 : x
  2. Step 2: Convert to fraction form
    92,375.60/138,217.40 = 65,783.04/x
  3. Step 3: Cross multiply
    92,375.60x = 138,217.40 × 65,783.04
  4. Step 4: Simplify right side
    92,375.60x = 9,092,360,752.90
  5. Step 5: Solve for x
    x = 9,092,360,752.90/92,375.60
  6. Step 6: Final answer
    x = 98,428.16

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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.