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Finding the Fourth Proportional to 90,728.32, 125,181.84 and 52,980.88

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Solution

The fourth proportional to 90,728.32, 125,181.84 and 52,980.88 is: 73,100.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,728.32 : 125,181.84 = 52,980.88 : x
  2. Step 2: Convert to fraction form
    90,728.32/125,181.84 = 52,980.88/x
  3. Step 3: Cross multiply
    90,728.32x = 125,181.84 × 52,980.88
  4. Step 4: Simplify right side
    90,728.32x = 6,632,244,043.22
  5. Step 5: Solve for x
    x = 6,632,244,043.22/90,728.32
  6. Step 6: Final answer
    x = 73,100.04

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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.