Home / 52,145.81-78,221.15-15,209.81

Finding the Fourth Proportional to 52,145.81, 78,221.15 and 15,209.81

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Solution

The fourth proportional to 52,145.81, 78,221.15 and 15,209.81 is: 22,815.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,145.81 : 78,221.15 = 15,209.81 : x
  2. Step 2: Convert to fraction form
    52,145.81/78,221.15 = 15,209.81/x
  3. Step 3: Cross multiply
    52,145.81x = 78,221.15 × 15,209.81
  4. Step 4: Simplify right side
    52,145.81x = 1,189,729,006.02
  5. Step 5: Solve for x
    x = 1,189,729,006.02/52,145.81
  6. Step 6: Final answer
    x = 22,815.43

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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.