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Finding the Fourth Proportional to 79,278.60, 109,409.48 and 52,373.94

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Solution

The fourth proportional to 79,278.60, 109,409.48 and 52,373.94 is: 72,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.60 : 109,409.48 = 52,373.94 : x
  2. Step 2: Convert to fraction form
    79,278.60/109,409.48 = 52,373.94/x
  3. Step 3: Cross multiply
    79,278.60x = 109,409.48 × 52,373.94
  4. Step 4: Simplify right side
    79,278.60x = 5,730,205,975.23
  5. Step 5: Solve for x
    x = 5,730,205,975.23/79,278.60
  6. Step 6: Final answer
    x = 72,279.36

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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.