Home / 90,761.52-136,049.40-31,548.60

Finding the Fourth Proportional to 90,761.52, 136,049.40 and 31,548.60

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Solution

The fourth proportional to 90,761.52, 136,049.40 and 31,548.60 is: 47,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,761.52 : 136,049.40 = 31,548.60 : x
  2. Step 2: Convert to fraction form
    90,761.52/136,049.40 = 31,548.60/x
  3. Step 3: Cross multiply
    90,761.52x = 136,049.40 × 31,548.60
  4. Step 4: Simplify right side
    90,761.52x = 4,292,168,100.84
  5. Step 5: Solve for x
    x = 4,292,168,100.84/90,761.52
  6. Step 6: Final answer
    x = 47,290.62

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1.5x scale

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.