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Finding the Fourth Proportional to 99,383.40, 149,031.90 and 29,248.20

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Solution

The fourth proportional to 99,383.40, 149,031.90 and 29,248.20 is: 43,859.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,383.40 : 149,031.90 = 29,248.20 : x
  2. Step 2: Convert to fraction form
    99,383.40/149,031.90 = 29,248.20/x
  3. Step 3: Cross multiply
    99,383.40x = 149,031.90 × 29,248.20
  4. Step 4: Simplify right side
    99,383.40x = 4,358,914,817.58
  5. Step 5: Solve for x
    x = 4,358,914,817.58/99,383.40
  6. Step 6: Final answer
    x = 43,859.59

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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.