Home / 51,819.80-71,505.78-31,681.40

Finding the Fourth Proportional to 51,819.80, 71,505.78 and 31,681.40

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Solution

The fourth proportional to 51,819.80, 71,505.78 and 31,681.40 is: 43,716.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,819.80 : 71,505.78 = 31,681.40 : x
  2. Step 2: Convert to fraction form
    51,819.80/71,505.78 = 31,681.40/x
  3. Step 3: Cross multiply
    51,819.80x = 71,505.78 × 31,681.40
  4. Step 4: Simplify right side
    51,819.80x = 2,265,403,218.49
  5. Step 5: Solve for x
    x = 2,265,403,218.49/51,819.80
  6. Step 6: Final answer
    x = 43,716.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.