Home / 78,286.75-108,032.56-42,475.39

Finding the Fourth Proportional to 78,286.75, 108,032.56 and 42,475.39

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Solution

The fourth proportional to 78,286.75, 108,032.56 and 42,475.39 is: 58,614.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286.75 : 108,032.56 = 42,475.39 : x
  2. Step 2: Convert to fraction form
    78,286.75/108,032.56 = 42,475.39/x
  3. Step 3: Cross multiply
    78,286.75x = 108,032.56 × 42,475.39
  4. Step 4: Simplify right side
    78,286.75x = 4,588,725,118.70
  5. Step 5: Solve for x
    x = 4,588,725,118.70/78,286.75
  6. Step 6: Final answer
    x = 58,614.33

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1.5x scale

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.