Home / 78,947.04-108,948.42-43,138.56

Finding the Fourth Proportional to 78,947.04, 108,948.42 and 43,138.56

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Solution

The fourth proportional to 78,947.04, 108,948.42 and 43,138.56 is: 59,532.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,947.04 : 108,948.42 = 43,138.56 : x
  2. Step 2: Convert to fraction form
    78,947.04/108,948.42 = 43,138.56/x
  3. Step 3: Cross multiply
    78,947.04x = 108,948.42 × 43,138.56
  4. Step 4: Simplify right side
    78,947.04x = 4,699,877,953.08
  5. Step 5: Solve for x
    x = 4,699,877,953.08/78,947.04
  6. Step 6: Final answer
    x = 59,532.04

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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.