Home / 99,590.20-149,385.30-40,427.80

Finding the Fourth Proportional to 99,590.20, 149,385.30 and 40,427.80

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Solution

The fourth proportional to 99,590.20, 149,385.30 and 40,427.80 is: 60,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,590.20 : 149,385.30 = 40,427.80 : x
  2. Step 2: Convert to fraction form
    99,590.20/149,385.30 = 40,427.80/x
  3. Step 3: Cross multiply
    99,590.20x = 149,385.30 × 40,427.80
  4. Step 4: Simplify right side
    99,590.20x = 6,039,319,031.34
  5. Step 5: Solve for x
    x = 6,039,319,031.34/99,590.20
  6. Step 6: Final answer
    x = 60,641.70

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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.