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Finding the Fourth Proportional to 79,652.78, 119,440.20 and 45,454.58

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Solution

The fourth proportional to 79,652.78, 119,440.20 and 45,454.58 is: 68,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,652.78 : 119,440.20 = 45,454.58 : x
  2. Step 2: Convert to fraction form
    79,652.78/119,440.20 = 45,454.58/x
  3. Step 3: Cross multiply
    79,652.78x = 119,440.20 × 45,454.58
  4. Step 4: Simplify right side
    79,652.78x = 5,429,104,126.12
  5. Step 5: Solve for x
    x = 5,429,104,126.12/79,652.78
  6. Step 6: Final answer
    x = 68,159.63

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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.