Home / 78,947.16-108,947.85-43,137.17

Finding the Fourth Proportional to 78,947.16, 108,947.85 and 43,137.17

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Solution

The fourth proportional to 78,947.16, 108,947.85 and 43,137.17 is: 59,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947.16 : 108,947.85 = 43,137.17 : x
  2. Step 2: Convert to fraction form
    78,947.16/108,947.85 = 43,137.17/x
  3. Step 3: Cross multiply
    78,947.16x = 108,947.85 × 43,137.17
  4. Step 4: Simplify right side
    78,947.16x = 4,699,701,166.16
  5. Step 5: Solve for x
    x = 4,699,701,166.16/78,947.16
  6. Step 6: Final answer
    x = 59,529.71

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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.