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Finding the Fourth Proportional to 61,150.60, 91,732.18 and 21,169.52

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Solution

The fourth proportional to 61,150.60, 91,732.18 and 21,169.52 is: 31,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,150.60 : 91,732.18 = 21,169.52 : x
  2. Step 2: Convert to fraction form
    61,150.60/91,732.18 = 21,169.52/x
  3. Step 3: Cross multiply
    61,150.60x = 91,732.18 × 21,169.52
  4. Step 4: Simplify right side
    61,150.60x = 1,941,926,219.15
  5. Step 5: Solve for x
    x = 1,941,926,219.15/61,150.60
  6. Step 6: Final answer
    x = 31,756.45

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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.