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Finding the Fourth Proportional to 91,876.81, 126,803.10 and 51,593.31

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Solution

The fourth proportional to 91,876.81, 126,803.10 and 51,593.31 is: 71,206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,876.81 : 126,803.10 = 51,593.31 : x
  2. Step 2: Convert to fraction form
    91,876.81/126,803.10 = 51,593.31/x
  3. Step 3: Cross multiply
    91,876.81x = 126,803.10 × 51,593.31
  4. Step 4: Simplify right side
    91,876.81x = 6,542,191,647.26
  5. Step 5: Solve for x
    x = 6,542,191,647.26/91,876.81
  6. Step 6: Final answer
    x = 71,206.13

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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.