Home / 90,616.68-125,025.12-54,780.66

Finding the Fourth Proportional to 90,616.68, 125,025.12 and 54,780.66

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Solution

The fourth proportional to 90,616.68, 125,025.12 and 54,780.66 is: 75,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,616.68 : 125,025.12 = 54,780.66 : x
  2. Step 2: Convert to fraction form
    90,616.68/125,025.12 = 54,780.66/x
  3. Step 3: Cross multiply
    90,616.68x = 125,025.12 × 54,780.66
  4. Step 4: Simplify right side
    90,616.68x = 6,848,958,590.18
  5. Step 5: Solve for x
    x = 6,848,958,590.18/90,616.68
  6. Step 6: Final answer
    x = 75,581.65

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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.