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Finding the Fourth Proportional to 91,363.01, 126,034.79 and 61,149.60

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Solution

The fourth proportional to 91,363.01, 126,034.79 and 61,149.60 is: 84,355.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363.01 : 126,034.79 = 61,149.60 : x
  2. Step 2: Convert to fraction form
    91,363.01/126,034.79 = 61,149.60/x
  3. Step 3: Cross multiply
    91,363.01x = 126,034.79 × 61,149.60
  4. Step 4: Simplify right side
    91,363.01x = 7,706,976,688.84
  5. Step 5: Solve for x
    x = 7,706,976,688.84/91,363.01
  6. Step 6: Final answer
    x = 84,355.55

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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.