Home / 78,366.68-108,143.04-42,555.92

Finding the Fourth Proportional to 78,366.68, 108,143.04 and 42,555.92

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Solution

The fourth proportional to 78,366.68, 108,143.04 and 42,555.92 is: 58,725.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,366.68 : 108,143.04 = 42,555.92 : x
  2. Step 2: Convert to fraction form
    78,366.68/108,143.04 = 42,555.92/x
  3. Step 3: Cross multiply
    78,366.68x = 108,143.04 × 42,555.92
  4. Step 4: Simplify right side
    78,366.68x = 4,602,126,558.80
  5. Step 5: Solve for x
    x = 4,602,126,558.80/78,366.68
  6. Step 6: Final answer
    x = 58,725.55

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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.