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Finding the Fourth Proportional to 113,013, 155,965.23 and 62,712

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Solution

The fourth proportional to 113,013, 155,965.23 and 62,712 is: 86,546.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,013 : 155,965.23 = 62,712 : x
  2. Step 2: Convert to fraction form
    113,013/155,965.23 = 62,712/x
  3. Step 3: Cross multiply
    113,013x = 155,965.23 × 62,712
  4. Step 4: Simplify right side
    113,013x = 9,780,891,503.76
  5. Step 5: Solve for x
    x = 9,780,891,503.76/113,013
  6. Step 6: Final answer
    x = 86,546.61

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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.