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Finding the Fourth Proportional to 91,393.92, 126,115.38 and 53,153.82

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Solution

The fourth proportional to 91,393.92, 126,115.38 and 53,153.82 is: 73,347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,393.92 : 126,115.38 = 53,153.82 : x
  2. Step 2: Convert to fraction form
    91,393.92/126,115.38 = 53,153.82/x
  3. Step 3: Cross multiply
    91,393.92x = 126,115.38 × 53,153.82
  4. Step 4: Simplify right side
    91,393.92x = 6,703,514,207.75
  5. Step 5: Solve for x
    x = 6,703,514,207.75/91,393.92
  6. Step 6: Final answer
    x = 73,347.49

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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.