Home / 90,432.59-135,655.02-31,272.87

Finding the Fourth Proportional to 90,432.59, 135,655.02 and 31,272.87

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Solution

The fourth proportional to 90,432.59, 135,655.02 and 31,272.87 is: 46,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,432.59 : 135,655.02 = 31,272.87 : x
  2. Step 2: Convert to fraction form
    90,432.59/135,655.02 = 31,272.87/x
  3. Step 3: Cross multiply
    90,432.59x = 135,655.02 × 31,272.87
  4. Step 4: Simplify right side
    90,432.59x = 4,242,321,805.31
  5. Step 5: Solve for x
    x = 4,242,321,805.31/90,432.59
  6. Step 6: Final answer
    x = 46,911.43

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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.