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Finding the Fourth Proportional to 91,999.80, 126,973.17 and 51,716.88

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Solution

The fourth proportional to 91,999.80, 126,973.17 and 51,716.88 is: 71,376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,999.80 : 126,973.17 = 51,716.88 : x
  2. Step 2: Convert to fraction form
    91,999.80/126,973.17 = 51,716.88/x
  3. Step 3: Cross multiply
    91,999.80x = 126,973.17 × 51,716.88
  4. Step 4: Simplify right side
    91,999.80x = 6,566,656,196.11
  5. Step 5: Solve for x
    x = 6,566,656,196.11/91,999.80
  6. Step 6: Final answer
    x = 71,376.85

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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.