Home / 78,895.57-108,876.15-43,085.72

Finding the Fourth Proportional to 78,895.57, 108,876.15 and 43,085.72

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Solution

The fourth proportional to 78,895.57, 108,876.15 and 43,085.72 is: 59,458.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,895.57 : 108,876.15 = 43,085.72 : x
  2. Step 2: Convert to fraction form
    78,895.57/108,876.15 = 43,085.72/x
  3. Step 3: Cross multiply
    78,895.57x = 108,876.15 × 43,085.72
  4. Step 4: Simplify right side
    78,895.57x = 4,691,007,585.77
  5. Step 5: Solve for x
    x = 4,691,007,585.77/78,895.57
  6. Step 6: Final answer
    x = 59,458.44

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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.