Home / 78,659.54-118,006.58-57,819.86

Finding the Fourth Proportional to 78,659.54, 118,006.58 and 57,819.86

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Solution

The fourth proportional to 78,659.54, 118,006.58 and 57,819.86 is: 86,742.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,659.54 : 118,006.58 = 57,819.86 : x
  2. Step 2: Convert to fraction form
    78,659.54/118,006.58 = 57,819.86/x
  3. Step 3: Cross multiply
    78,659.54x = 118,006.58 × 57,819.86
  4. Step 4: Simplify right side
    78,659.54x = 6,823,123,934.68
  5. Step 5: Solve for x
    x = 6,823,123,934.68/78,659.54
  6. Step 6: Final answer
    x = 86,742.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.