Home / 78,712.20-118,068.30-28,793.93

Finding the Fourth Proportional to 78,712.20, 118,068.30 and 28,793.93

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Solution

The fourth proportional to 78,712.20, 118,068.30 and 28,793.93 is: 43,190.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,712.20 : 118,068.30 = 28,793.93 : x
  2. Step 2: Convert to fraction form
    78,712.20/118,068.30 = 28,793.93/x
  3. Step 3: Cross multiply
    78,712.20x = 118,068.30 × 28,793.93
  4. Step 4: Simplify right side
    78,712.20x = 3,399,649,775.08
  5. Step 5: Solve for x
    x = 3,399,649,775.08/78,712.20
  6. Step 6: Final answer
    x = 43,190.89

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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.