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Finding the Fourth Proportional to 79,920.32, 119,849.32 and 29,973.20

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Solution

The fourth proportional to 79,920.32, 119,849.32 and 29,973.20 is: 44,948.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.32 : 119,849.32 = 29,973.20 : x
  2. Step 2: Convert to fraction form
    79,920.32/119,849.32 = 29,973.20/x
  3. Step 3: Cross multiply
    79,920.32x = 119,849.32 × 29,973.20
  4. Step 4: Simplify right side
    79,920.32x = 3,592,267,638.22
  5. Step 5: Solve for x
    x = 3,592,267,638.22/79,920.32
  6. Step 6: Final answer
    x = 44,948.11

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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.