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Finding the Fourth Proportional to 99,079.80, 148,587.30 and 36,742.20

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Solution

The fourth proportional to 99,079.80, 148,587.30 and 36,742.20 is: 55,101.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,079.80 : 148,587.30 = 36,742.20 : x
  2. Step 2: Convert to fraction form
    99,079.80/148,587.30 = 36,742.20/x
  3. Step 3: Cross multiply
    99,079.80x = 148,587.30 × 36,742.20
  4. Step 4: Simplify right side
    99,079.80x = 5,459,424,294.06
  5. Step 5: Solve for x
    x = 5,459,424,294.06/99,079.80
  6. Step 6: Final answer
    x = 55,101.28

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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.