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Finding the Fourth Proportional to 91,013, 136,519.50 and 25,349

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Solution

The fourth proportional to 91,013, 136,519.50 and 25,349 is: 38,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,013 : 136,519.50 = 25,349 : x
  2. Step 2: Convert to fraction form
    91,013/136,519.50 = 25,349/x
  3. Step 3: Cross multiply
    91,013x = 136,519.50 × 25,349
  4. Step 4: Simplify right side
    91,013x = 3,460,632,805.50
  5. Step 5: Solve for x
    x = 3,460,632,805.50/91,013
  6. Step 6: Final answer
    x = 38,023.50

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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.