Home / 51,821.12-77,712.60-18,532.16

Finding the Fourth Proportional to 51,821.12, 77,712.60 and 18,532.16

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Solution

The fourth proportional to 51,821.12, 77,712.60 and 18,532.16 is: 27,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,821.12 : 77,712.60 = 18,532.16 : x
  2. Step 2: Convert to fraction form
    51,821.12/77,712.60 = 18,532.16/x
  3. Step 3: Cross multiply
    51,821.12x = 77,712.60 × 18,532.16
  4. Step 4: Simplify right side
    51,821.12x = 1,440,182,337.22
  5. Step 5: Solve for x
    x = 1,440,182,337.22/51,821.12
  6. Step 6: Final answer
    x = 27,791.42

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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.