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Finding the Fourth Proportional to 89,937.72, 124,163.76 and 54,136.56

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Solution

The fourth proportional to 89,937.72, 124,163.76 and 54,136.56 is: 74,738.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,937.72 : 124,163.76 = 54,136.56 : x
  2. Step 2: Convert to fraction form
    89,937.72/124,163.76 = 54,136.56/x
  3. Step 3: Cross multiply
    89,937.72x = 124,163.76 × 54,136.56
  4. Step 4: Simplify right side
    89,937.72x = 6,721,798,843.07
  5. Step 5: Solve for x
    x = 6,721,798,843.07/89,937.72
  6. Step 6: Final answer
    x = 74,738.37

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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.