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Finding the Fourth Proportional to 99,080.80, 148,718.40 and 49,217.20

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Solution

The fourth proportional to 99,080.80, 148,718.40 and 49,217.20 is: 73,874.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,080.80 : 148,718.40 = 49,217.20 : x
  2. Step 2: Convert to fraction form
    99,080.80/148,718.40 = 49,217.20/x
  3. Step 3: Cross multiply
    99,080.80x = 148,718.40 × 49,217.20
  4. Step 4: Simplify right side
    99,080.80x = 7,319,503,236.48
  5. Step 5: Solve for x
    x = 7,319,503,236.48/99,080.80
  6. Step 6: Final answer
    x = 73,874.08

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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.