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Finding the Fourth Proportional to 79,382.88, 109,553.86 and 52,478.74

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Solution

The fourth proportional to 79,382.88, 109,553.86 and 52,478.74 is: 72,424.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,382.88 : 109,553.86 = 52,478.74 : x
  2. Step 2: Convert to fraction form
    79,382.88/109,553.86 = 52,478.74/x
  3. Step 3: Cross multiply
    79,382.88x = 109,553.86 × 52,478.74
  4. Step 4: Simplify right side
    79,382.88x = 5,749,248,534.94
  5. Step 5: Solve for x
    x = 5,749,248,534.94/79,382.88
  6. Step 6: Final answer
    x = 72,424.29

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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.