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Finding the Fourth Proportional to 61,146.84, 91,693.08 and 21,169.56

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Solution

The fourth proportional to 61,146.84, 91,693.08 and 21,169.56 is: 31,744.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,146.84 : 91,693.08 = 21,169.56 : x
  2. Step 2: Convert to fraction form
    61,146.84/91,693.08 = 21,169.56/x
  3. Step 3: Cross multiply
    61,146.84x = 91,693.08 × 21,169.56
  4. Step 4: Simplify right side
    61,146.84x = 1,941,102,158.64
  5. Step 5: Solve for x
    x = 1,941,102,158.64/61,146.84
  6. Step 6: Final answer
    x = 31,744.93

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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.