Home / 90,862.38-136,293.66-31,683.78

Finding the Fourth Proportional to 90,862.38, 136,293.66 and 31,683.78

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Solution

The fourth proportional to 90,862.38, 136,293.66 and 31,683.78 is: 47,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,862.38 : 136,293.66 = 31,683.78 : x
  2. Step 2: Convert to fraction form
    90,862.38/136,293.66 = 31,683.78/x
  3. Step 3: Cross multiply
    90,862.38x = 136,293.66 × 31,683.78
  4. Step 4: Simplify right side
    90,862.38x = 4,318,298,338.83
  5. Step 5: Solve for x
    x = 4,318,298,338.83/90,862.38
  6. Step 6: Final answer
    x = 47,525.70

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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.