Home / 90,659.16-135,990.36-31,496.76

Finding the Fourth Proportional to 90,659.16, 135,990.36 and 31,496.76

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Solution

The fourth proportional to 90,659.16, 135,990.36 and 31,496.76 is: 47,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.16 : 135,990.36 = 31,496.76 : x
  2. Step 2: Convert to fraction form
    90,659.16/135,990.36 = 31,496.76/x
  3. Step 3: Cross multiply
    90,659.16x = 135,990.36 × 31,496.76
  4. Step 4: Simplify right side
    90,659.16x = 4,283,255,731.23
  5. Step 5: Solve for x
    x = 4,283,255,731.23/90,659.16
  6. Step 6: Final answer
    x = 47,245.70

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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.