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Finding the Fourth Proportional to 55,995.54, 84,005.77 and 20,456.79

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Solution

The fourth proportional to 55,995.54, 84,005.77 and 20,456.79 is: 30,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,995.54 : 84,005.77 = 20,456.79 : x
  2. Step 2: Convert to fraction form
    55,995.54/84,005.77 = 20,456.79/x
  3. Step 3: Cross multiply
    55,995.54x = 84,005.77 × 20,456.79
  4. Step 4: Simplify right side
    55,995.54x = 1,718,488,395.68
  5. Step 5: Solve for x
    x = 1,718,488,395.68/55,995.54
  6. Step 6: Final answer
    x = 30,689.74

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1.5x scale

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.