Home / 90,490.48-135,686.38-31,321.24

Finding the Fourth Proportional to 90,490.48, 135,686.38 and 31,321.24

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Solution

The fourth proportional to 90,490.48, 135,686.38 and 31,321.24 is: 46,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,490.48 : 135,686.38 = 31,321.24 : x
  2. Step 2: Convert to fraction form
    90,490.48/135,686.38 = 31,321.24/x
  3. Step 3: Cross multiply
    90,490.48x = 135,686.38 × 31,321.24
  4. Step 4: Simplify right side
    90,490.48x = 4,249,865,672.71
  5. Step 5: Solve for x
    x = 4,249,865,672.71/90,490.48
  6. Step 6: Final answer
    x = 46,964.78

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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.