Home / 90,403.43-124,806.39-61,766.15

Finding the Fourth Proportional to 90,403.43, 124,806.39 and 61,766.15

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Solution

The fourth proportional to 90,403.43, 124,806.39 and 61,766.15 is: 85,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,403.43 : 124,806.39 = 61,766.15 : x
  2. Step 2: Convert to fraction form
    90,403.43/124,806.39 = 61,766.15/x
  3. Step 3: Cross multiply
    90,403.43x = 124,806.39 × 61,766.15
  4. Step 4: Simplify right side
    90,403.43x = 7,708,810,205.70
  5. Step 5: Solve for x
    x = 7,708,810,205.70/90,403.43
  6. Step 6: Final answer
    x = 85,271.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.