Home / 90,871.20-125,339.52-54,999.36

Finding the Fourth Proportional to 90,871.20, 125,339.52 and 54,999.36

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Solution

The fourth proportional to 90,871.20, 125,339.52 and 54,999.36 is: 75,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.20 : 125,339.52 = 54,999.36 : x
  2. Step 2: Convert to fraction form
    90,871.20/125,339.52 = 54,999.36/x
  3. Step 3: Cross multiply
    90,871.20x = 125,339.52 × 54,999.36
  4. Step 4: Simplify right side
    90,871.20x = 6,893,593,382.71
  5. Step 5: Solve for x
    x = 6,893,593,382.71/90,871.20
  6. Step 6: Final answer
    x = 75,861.15

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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.