Home / 90,921.49-125,349.34-63,660.91

Finding the Fourth Proportional to 90,921.49, 125,349.34 and 63,660.91

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Solution

The fourth proportional to 90,921.49, 125,349.34 and 63,660.91 is: 87,766.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,921.49 : 125,349.34 = 63,660.91 : x
  2. Step 2: Convert to fraction form
    90,921.49/125,349.34 = 63,660.91/x
  3. Step 3: Cross multiply
    90,921.49x = 125,349.34 × 63,660.91
  4. Step 4: Simplify right side
    90,921.49x = 7,979,852,107.25
  5. Step 5: Solve for x
    x = 7,979,852,107.25/90,921.49
  6. Step 6: Final answer
    x = 87,766.41

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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.