Home / 90,817.76-136,257.24-40,209.80

Finding the Fourth Proportional to 90,817.76, 136,257.24 and 40,209.80

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Solution

The fourth proportional to 90,817.76, 136,257.24 and 40,209.80 is: 60,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,817.76 : 136,257.24 = 40,209.80 : x
  2. Step 2: Convert to fraction form
    90,817.76/136,257.24 = 40,209.80/x
  3. Step 3: Cross multiply
    90,817.76x = 136,257.24 × 40,209.80
  4. Step 4: Simplify right side
    90,817.76x = 5,478,876,368.95
  5. Step 5: Solve for x
    x = 5,478,876,368.95/90,817.76
  6. Step 6: Final answer
    x = 60,328.25

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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.