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Finding the Fourth Proportional to 98,394.65, 135,791.48 and 55,378.26

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Solution

The fourth proportional to 98,394.65, 135,791.48 and 55,378.26 is: 76,425.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,394.65 : 135,791.48 = 55,378.26 : x
  2. Step 2: Convert to fraction form
    98,394.65/135,791.48 = 55,378.26/x
  3. Step 3: Cross multiply
    98,394.65x = 135,791.48 × 55,378.26
  4. Step 4: Simplify right side
    98,394.65x = 7,519,894,929.38
  5. Step 5: Solve for x
    x = 7,519,894,929.38/98,394.65
  6. Step 6: Final answer
    x = 76,425.86

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1.5x scale

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.