Home / 55,815.12-77,026.68-31,939.92

Finding the Fourth Proportional to 55,815.12, 77,026.68 and 31,939.92

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Solution

The fourth proportional to 55,815.12, 77,026.68 and 31,939.92 is: 44,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,815.12 : 77,026.68 = 31,939.92 : x
  2. Step 2: Convert to fraction form
    55,815.12/77,026.68 = 31,939.92/x
  3. Step 3: Cross multiply
    55,815.12x = 77,026.68 × 31,939.92
  4. Step 4: Simplify right side
    55,815.12x = 2,460,225,997.07
  5. Step 5: Solve for x
    x = 2,460,225,997.07/55,815.12
  6. Step 6: Final answer
    x = 44,078.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.