Home / 72,162.52-108,282.46-30,071.72

Finding the Fourth Proportional to 72,162.52, 108,282.46 and 30,071.72

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Solution

The fourth proportional to 72,162.52, 108,282.46 and 30,071.72 is: 45,123.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,162.52 : 108,282.46 = 30,071.72 : x
  2. Step 2: Convert to fraction form
    72,162.52/108,282.46 = 30,071.72/x
  3. Step 3: Cross multiply
    72,162.52x = 108,282.46 × 30,071.72
  4. Step 4: Simplify right side
    72,162.52x = 3,256,239,818.03
  5. Step 5: Solve for x
    x = 3,256,239,818.03/72,162.52
  6. Step 6: Final answer
    x = 45,123.70

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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.