Home / 90,856.70-125,329.10-59,046.78

Finding the Fourth Proportional to 90,856.70, 125,329.10 and 59,046.78

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Solution

The fourth proportional to 90,856.70, 125,329.10 and 59,046.78 is: 81,450.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,856.70 : 125,329.10 = 59,046.78 : x
  2. Step 2: Convert to fraction form
    90,856.70/125,329.10 = 59,046.78/x
  3. Step 3: Cross multiply
    90,856.70x = 125,329.10 × 59,046.78
  4. Step 4: Simplify right side
    90,856.70x = 7,400,279,500.06
  5. Step 5: Solve for x
    x = 7,400,279,500.06/90,856.70
  6. Step 6: Final answer
    x = 81,450.02

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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.