Home / 78,458.64-108,248.04-48,667.92

Finding the Fourth Proportional to 78,458.64, 108,248.04 and 48,667.92

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Solution

The fourth proportional to 78,458.64, 108,248.04 and 48,667.92 is: 67,146.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,458.64 : 108,248.04 = 48,667.92 : x
  2. Step 2: Convert to fraction form
    78,458.64/108,248.04 = 48,667.92/x
  3. Step 3: Cross multiply
    78,458.64x = 108,248.04 × 48,667.92
  4. Step 4: Simplify right side
    78,458.64x = 5,268,206,950.88
  5. Step 5: Solve for x
    x = 5,268,206,950.88/78,458.64
  6. Step 6: Final answer
    x = 67,146.29

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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.