Home / 80,283.03-120,499.28-40,869.65

Finding the Fourth Proportional to 80,283.03, 120,499.28 and 40,869.65

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Solution

The fourth proportional to 80,283.03, 120,499.28 and 40,869.65 is: 61,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,283.03 : 120,499.28 = 40,869.65 : x
  2. Step 2: Convert to fraction form
    80,283.03/120,499.28 = 40,869.65/x
  3. Step 3: Cross multiply
    80,283.03x = 120,499.28 × 40,869.65
  4. Step 4: Simplify right side
    80,283.03x = 4,924,762,592.01
  5. Step 5: Solve for x
    x = 4,924,762,592.01/80,283.03
  6. Step 6: Final answer
    x = 61,342.51

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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.