Home / 90,478.40-124,854.55-54,647.24

Finding the Fourth Proportional to 90,478.40, 124,854.55 and 54,647.24

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Solution

The fourth proportional to 90,478.40, 124,854.55 and 54,647.24 is: 75,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,478.40 : 124,854.55 = 54,647.24 : x
  2. Step 2: Convert to fraction form
    90,478.40/124,854.55 = 54,647.24/x
  3. Step 3: Cross multiply
    90,478.40x = 124,854.55 × 54,647.24
  4. Step 4: Simplify right side
    90,478.40x = 6,822,955,798.05
  5. Step 5: Solve for x
    x = 6,822,955,798.05/90,478.40
  6. Step 6: Final answer
    x = 75,409.78

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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.