Home / 90,856.64-125,373.48-66,996.20

Finding the Fourth Proportional to 90,856.64, 125,373.48 and 66,996.20

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Solution

The fourth proportional to 90,856.64, 125,373.48 and 66,996.20 is: 92,448.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,856.64 : 125,373.48 = 66,996.20 : x
  2. Step 2: Convert to fraction form
    90,856.64/125,373.48 = 66,996.20/x
  3. Step 3: Cross multiply
    90,856.64x = 125,373.48 × 66,996.20
  4. Step 4: Simplify right side
    90,856.64x = 8,399,546,740.78
  5. Step 5: Solve for x
    x = 8,399,546,740.78/90,856.64
  6. Step 6: Final answer
    x = 92,448.35

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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.