Home / 55,031.30-75,956.79-31,172.04

Finding the Fourth Proportional to 55,031.30, 75,956.79 and 31,172.04

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Solution

The fourth proportional to 55,031.30, 75,956.79 and 31,172.04 is: 43,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,031.30 : 75,956.79 = 31,172.04 : x
  2. Step 2: Convert to fraction form
    55,031.30/75,956.79 = 31,172.04/x
  3. Step 3: Cross multiply
    55,031.30x = 75,956.79 × 31,172.04
  4. Step 4: Simplify right side
    55,031.30x = 2,367,728,037.70
  5. Step 5: Solve for x
    x = 2,367,728,037.70/55,031.30
  6. Step 6: Final answer
    x = 43,025.12

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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.