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Finding the Fourth Proportional to 72,279.86, 108,373.53 and 34,765.23

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Solution

The fourth proportional to 72,279.86, 108,373.53 and 34,765.23 is: 52,125.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,279.86 : 108,373.53 = 34,765.23 : x
  2. Step 2: Convert to fraction form
    72,279.86/108,373.53 = 34,765.23/x
  3. Step 3: Cross multiply
    72,279.86x = 108,373.53 × 34,765.23
  4. Step 4: Simplify right side
    72,279.86x = 3,767,630,696.36
  5. Step 5: Solve for x
    x = 3,767,630,696.36/72,279.86
  6. Step 6: Final answer
    x = 52,125.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.