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Finding the Fourth Proportional to 113,017, 155,968.32 and 62,716

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Solution

The fourth proportional to 113,017, 155,968.32 and 62,716 is: 86,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,017 : 155,968.32 = 62,716 : x
  2. Step 2: Convert to fraction form
    113,017/155,968.32 = 62,716/x
  3. Step 3: Cross multiply
    113,017x = 155,968.32 × 62,716
  4. Step 4: Simplify right side
    113,017x = 9,781,709,157.12
  5. Step 5: Solve for x
    x = 9,781,709,157.12/113,017
  6. Step 6: Final answer
    x = 86,550.78

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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.