Home / 91,094.76-125,615.39-78,391.04

Finding the Fourth Proportional to 91,094.76, 125,615.39 and 78,391.04

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Solution

The fourth proportional to 91,094.76, 125,615.39 and 78,391.04 is: 108,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,094.76 : 125,615.39 = 78,391.04 : x
  2. Step 2: Convert to fraction form
    91,094.76/125,615.39 = 78,391.04/x
  3. Step 3: Cross multiply
    91,094.76x = 125,615.39 × 78,391.04
  4. Step 4: Simplify right side
    91,094.76x = 9,847,120,042.07
  5. Step 5: Solve for x
    x = 9,847,120,042.07/91,094.76
  6. Step 6: Final answer
    x = 108,097.55

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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.