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Finding the Fourth Proportional to 91,751.40, 126,538.20 and 59,456.70

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Solution

The fourth proportional to 91,751.40, 126,538.20 and 59,456.70 is: 81,999.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,751.40 : 126,538.20 = 59,456.70 : x
  2. Step 2: Convert to fraction form
    91,751.40/126,538.20 = 59,456.70/x
  3. Step 3: Cross multiply
    91,751.40x = 126,538.20 × 59,456.70
  4. Step 4: Simplify right side
    91,751.40x = 7,523,543,795.94
  5. Step 5: Solve for x
    x = 7,523,543,795.94/91,751.40
  6. Step 6: Final answer
    x = 81,999.23

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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.