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Finding the Fourth Proportional to 65,402.60, 98,103.90 and 34,247.40

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Solution

The fourth proportional to 65,402.60, 98,103.90 and 34,247.40 is: 51,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,402.60 : 98,103.90 = 34,247.40 : x
  2. Step 2: Convert to fraction form
    65,402.60/98,103.90 = 34,247.40/x
  3. Step 3: Cross multiply
    65,402.60x = 98,103.90 × 34,247.40
  4. Step 4: Simplify right side
    65,402.60x = 3,359,803,504.86
  5. Step 5: Solve for x
    x = 3,359,803,504.86/65,402.60
  6. Step 6: Final answer
    x = 51,371.10

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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.