Home / 78,630.80-108,648.68-62,845.52

Finding the Fourth Proportional to 78,630.80, 108,648.68 and 62,845.52

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Solution

The fourth proportional to 78,630.80, 108,648.68 and 62,845.52 is: 86,837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,630.80 : 108,648.68 = 62,845.52 : x
  2. Step 2: Convert to fraction form
    78,630.80/108,648.68 = 62,845.52/x
  3. Step 3: Cross multiply
    78,630.80x = 108,648.68 × 62,845.52
  4. Step 4: Simplify right side
    78,630.80x = 6,828,082,791.91
  5. Step 5: Solve for x
    x = 6,828,082,791.91/78,630.80
  6. Step 6: Final answer
    x = 86,837.25

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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.