Home / 52,304.09-78,456.69-20,721.84

Finding the Fourth Proportional to 52,304.09, 78,456.69 and 20,721.84

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Solution

The fourth proportional to 52,304.09, 78,456.69 and 20,721.84 is: 31,082.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,304.09 : 78,456.69 = 20,721.84 : x
  2. Step 2: Convert to fraction form
    52,304.09/78,456.69 = 20,721.84/x
  3. Step 3: Cross multiply
    52,304.09x = 78,456.69 × 20,721.84
  4. Step 4: Simplify right side
    52,304.09x = 1,625,766,977.11
  5. Step 5: Solve for x
    x = 1,625,766,977.11/52,304.09
  6. Step 6: Final answer
    x = 31,082.98

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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.