Home / 51,864.10-77,834.55-20,721.70

Finding the Fourth Proportional to 51,864.10, 77,834.55 and 20,721.70

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Solution

The fourth proportional to 51,864.10, 77,834.55 and 20,721.70 is: 31,097.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,864.10 : 77,834.55 = 20,721.70 : x
  2. Step 2: Convert to fraction form
    51,864.10/77,834.55 = 20,721.70/x
  3. Step 3: Cross multiply
    51,864.10x = 77,834.55 × 20,721.70
  4. Step 4: Simplify right side
    51,864.10x = 1,612,864,194.74
  5. Step 5: Solve for x
    x = 1,612,864,194.74/51,864.10
  6. Step 6: Final answer
    x = 31,097.89

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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.