Home / 90,337.05-135,537.02-40,422.42

Finding the Fourth Proportional to 90,337.05, 135,537.02 and 40,422.42

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Solution

The fourth proportional to 90,337.05, 135,537.02 and 40,422.42 is: 60,647.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,337.05 : 135,537.02 = 40,422.42 : x
  2. Step 2: Convert to fraction form
    90,337.05/135,537.02 = 40,422.42/x
  3. Step 3: Cross multiply
    90,337.05x = 135,537.02 × 40,422.42
  4. Step 4: Simplify right side
    90,337.05x = 5,478,734,145.88
  5. Step 5: Solve for x
    x = 5,478,734,145.88/90,337.05
  6. Step 6: Final answer
    x = 60,647.70

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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.