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Finding the Fourth Proportional to 98,452.80, 147,679.20 and 45,964.80

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Solution

The fourth proportional to 98,452.80, 147,679.20 and 45,964.80 is: 68,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,452.80 : 147,679.20 = 45,964.80 : x
  2. Step 2: Convert to fraction form
    98,452.80/147,679.20 = 45,964.80/x
  3. Step 3: Cross multiply
    98,452.80x = 147,679.20 × 45,964.80
  4. Step 4: Simplify right side
    98,452.80x = 6,788,044,892.16
  5. Step 5: Solve for x
    x = 6,788,044,892.16/98,452.80
  6. Step 6: Final answer
    x = 68,947.20

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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.