Home / 78,769.98-118,115.55-26,161.02

Finding the Fourth Proportional to 78,769.98, 118,115.55 and 26,161.02

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Solution

The fourth proportional to 78,769.98, 118,115.55 and 26,161.02 is: 39,228.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,769.98 : 118,115.55 = 26,161.02 : x
  2. Step 2: Convert to fraction form
    78,769.98/118,115.55 = 26,161.02/x
  3. Step 3: Cross multiply
    78,769.98x = 118,115.55 × 26,161.02
  4. Step 4: Simplify right side
    78,769.98x = 3,090,023,265.86
  5. Step 5: Solve for x
    x = 3,090,023,265.86/78,769.98
  6. Step 6: Final answer
    x = 39,228.44

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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.