Home / 78,763.68-108,690.60-42,953.04

Finding the Fourth Proportional to 78,763.68, 108,690.60 and 42,953.04

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Solution

The fourth proportional to 78,763.68, 108,690.60 and 42,953.04 is: 59,273.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,763.68 : 108,690.60 = 42,953.04 : x
  2. Step 2: Convert to fraction form
    78,763.68/108,690.60 = 42,953.04/x
  3. Step 3: Cross multiply
    78,763.68x = 108,690.60 × 42,953.04
  4. Step 4: Simplify right side
    78,763.68x = 4,668,591,689.42
  5. Step 5: Solve for x
    x = 4,668,591,689.42/78,763.68
  6. Step 6: Final answer
    x = 59,273.41

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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.