Home / 61,617.12-91,979.82-54,143.68

Finding the Fourth Proportional to 61,617.12, 91,979.82 and 54,143.68

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Solution

The fourth proportional to 61,617.12, 91,979.82 and 54,143.68 is: 80,823.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,617.12 : 91,979.82 = 54,143.68 : x
  2. Step 2: Convert to fraction form
    61,617.12/91,979.82 = 54,143.68/x
  3. Step 3: Cross multiply
    61,617.12x = 91,979.82 × 54,143.68
  4. Step 4: Simplify right side
    61,617.12x = 4,980,125,940.54
  5. Step 5: Solve for x
    x = 4,980,125,940.54/61,617.12
  6. Step 6: Final answer
    x = 80,823.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.