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Finding the Fourth Proportional to 65,246.72, 97,800.11 and 42,748.90

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Solution

The fourth proportional to 65,246.72, 97,800.11 and 42,748.90 is: 64,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,246.72 : 97,800.11 = 42,748.90 : x
  2. Step 2: Convert to fraction form
    65,246.72/97,800.11 = 42,748.90/x
  3. Step 3: Cross multiply
    65,246.72x = 97,800.11 × 42,748.90
  4. Step 4: Simplify right side
    65,246.72x = 4,180,847,351.50
  5. Step 5: Solve for x
    x = 4,180,847,351.50/65,246.72
  6. Step 6: Final answer
    x = 64,077.51

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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.