Home / 55,013.79-75,920.84-31,139.96

Finding the Fourth Proportional to 55,013.79, 75,920.84 and 31,139.96

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Solution

The fourth proportional to 55,013.79, 75,920.84 and 31,139.96 is: 42,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,013.79 : 75,920.84 = 31,139.96 : x
  2. Step 2: Convert to fraction form
    55,013.79/75,920.84 = 31,139.96/x
  3. Step 3: Cross multiply
    55,013.79x = 75,920.84 × 31,139.96
  4. Step 4: Simplify right side
    55,013.79x = 2,364,171,385.46
  5. Step 5: Solve for x
    x = 2,364,171,385.46/55,013.79
  6. Step 6: Final answer
    x = 42,974.16

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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.