Home / 90,850.64-125,365.20-66,990.24

Finding the Fourth Proportional to 90,850.64, 125,365.20 and 66,990.24

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Solution

The fourth proportional to 90,850.64, 125,365.20 and 66,990.24 is: 92,440.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,850.64 : 125,365.20 = 66,990.24 : x
  2. Step 2: Convert to fraction form
    90,850.64/125,365.20 = 66,990.24/x
  3. Step 3: Cross multiply
    90,850.64x = 125,365.20 × 66,990.24
  4. Step 4: Simplify right side
    90,850.64x = 8,398,244,835.65
  5. Step 5: Solve for x
    x = 8,398,244,835.65/90,850.64
  6. Step 6: Final answer
    x = 92,440.13

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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.