Home / 90,863.59-136,318.07-31,699.75

Finding the Fourth Proportional to 90,863.59, 136,318.07 and 31,699.75

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Solution

The fourth proportional to 90,863.59, 136,318.07 and 31,699.75 is: 47,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,863.59 : 136,318.07 = 31,699.75 : x
  2. Step 2: Convert to fraction form
    90,863.59/136,318.07 = 31,699.75/x
  3. Step 3: Cross multiply
    90,863.59x = 136,318.07 × 31,699.75
  4. Step 4: Simplify right side
    90,863.59x = 4,321,248,739.48
  5. Step 5: Solve for x
    x = 4,321,248,739.48/90,863.59
  6. Step 6: Final answer
    x = 47,557.54

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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.