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Finding the Fourth Proportional to 91,882.24, 126,630.40 and 71,728.64

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Solution

The fourth proportional to 91,882.24, 126,630.40 and 71,728.64 is: 98,855.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,882.24 : 126,630.40 = 71,728.64 : x
  2. Step 2: Convert to fraction form
    91,882.24/126,630.40 = 71,728.64/x
  3. Step 3: Cross multiply
    91,882.24x = 126,630.40 × 71,728.64
  4. Step 4: Simplify right side
    91,882.24x = 9,083,026,374.66
  5. Step 5: Solve for x
    x = 9,083,026,374.66/91,882.24
  6. Step 6: Final answer
    x = 98,855.08

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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.