Home / 78,761.08-118,070.55-53,469.11

Finding the Fourth Proportional to 78,761.08, 118,070.55 and 53,469.11

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Solution

The fourth proportional to 78,761.08, 118,070.55 and 53,469.11 is: 80,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.08 : 118,070.55 = 53,469.11 : x
  2. Step 2: Convert to fraction form
    78,761.08/118,070.55 = 53,469.11/x
  3. Step 3: Cross multiply
    78,761.08x = 118,070.55 × 53,469.11
  4. Step 4: Simplify right side
    78,761.08x = 6,313,127,445.70
  5. Step 5: Solve for x
    x = 6,313,127,445.70/78,761.08
  6. Step 6: Final answer
    x = 80,155.42

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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.