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Finding the Fourth Proportional to 91,101.82, 125,720.70 and 50,818.18

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Solution

The fourth proportional to 91,101.82, 125,720.70 and 50,818.18 is: 70,129.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,101.82 : 125,720.70 = 50,818.18 : x
  2. Step 2: Convert to fraction form
    91,101.82/125,720.70 = 50,818.18/x
  3. Step 3: Cross multiply
    91,101.82x = 125,720.70 × 50,818.18
  4. Step 4: Simplify right side
    91,101.82x = 6,388,897,162.33
  5. Step 5: Solve for x
    x = 6,388,897,162.33/91,101.82
  6. Step 6: Final answer
    x = 70,129.19

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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.