Home / 90,687.16-135,952.98-31,485.88

Finding the Fourth Proportional to 90,687.16, 135,952.98 and 31,485.88

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Solution

The fourth proportional to 90,687.16, 135,952.98 and 31,485.88 is: 47,201.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,687.16 : 135,952.98 = 31,485.88 : x
  2. Step 2: Convert to fraction form
    90,687.16/135,952.98 = 31,485.88/x
  3. Step 3: Cross multiply
    90,687.16x = 135,952.98 × 31,485.88
  4. Step 4: Simplify right side
    90,687.16x = 4,280,599,213.92
  5. Step 5: Solve for x
    x = 4,280,599,213.92/90,687.16
  6. Step 6: Final answer
    x = 47,201.82

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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.