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Finding the Fourth Proportional to 61,068.66, 91,616.06 and 18,947.82

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Solution

The fourth proportional to 61,068.66, 91,616.06 and 18,947.82 is: 28,425.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,068.66 : 91,616.06 = 18,947.82 : x
  2. Step 2: Convert to fraction form
    61,068.66/91,616.06 = 18,947.82/x
  3. Step 3: Cross multiply
    61,068.66x = 91,616.06 × 18,947.82
  4. Step 4: Simplify right side
    61,068.66x = 1,735,924,613.99
  5. Step 5: Solve for x
    x = 1,735,924,613.99/61,068.66
  6. Step 6: Final answer
    x = 28,425.79

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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.