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Finding the Fourth Proportional to 90,280.80, 135,442.80 and 37,663.20

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Solution

The fourth proportional to 90,280.80, 135,442.80 and 37,663.20 is: 56,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,280.80 : 135,442.80 = 37,663.20 : x
  2. Step 2: Convert to fraction form
    90,280.80/135,442.80 = 37,663.20/x
  3. Step 3: Cross multiply
    90,280.80x = 135,442.80 × 37,663.20
  4. Step 4: Simplify right side
    90,280.80x = 5,101,209,264.96
  5. Step 5: Solve for x
    x = 5,101,209,264.96/90,280.80
  6. Step 6: Final answer
    x = 56,503.81

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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.