Home / 72,301.11-108,429.80-42,711

Finding the Fourth Proportional to 72,301.11, 108,429.80 and 42,711

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Solution

The fourth proportional to 72,301.11, 108,429.80 and 42,711 is: 64,053.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.11 : 108,429.80 = 42,711 : x
  2. Step 2: Convert to fraction form
    72,301.11/108,429.80 = 42,711/x
  3. Step 3: Cross multiply
    72,301.11x = 108,429.80 × 42,711
  4. Step 4: Simplify right side
    72,301.11x = 4,631,144,974.25
  5. Step 5: Solve for x
    x = 4,631,144,974.25/72,301.11
  6. Step 6: Final answer
    x = 64,053.58

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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.