Home / 52,306.97-78,456-20,708.45

Finding the Fourth Proportional to 52,306.97, 78,456 and 20,708.45

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Solution

The fourth proportional to 52,306.97, 78,456 and 20,708.45 is: 31,060.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,306.97 : 78,456 = 20,708.45 : x
  2. Step 2: Convert to fraction form
    52,306.97/78,456 = 20,708.45/x
  3. Step 3: Cross multiply
    52,306.97x = 78,456 × 20,708.45
  4. Step 4: Simplify right side
    52,306.97x = 1,624,701,760.92
  5. Step 5: Solve for x
    x = 1,624,701,760.92/52,306.97
  6. Step 6: Final answer
    x = 31,060.91

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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.