Home / 51,988.68-77,982.96-20,845.80

Finding the Fourth Proportional to 51,988.68, 77,982.96 and 20,845.80

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Solution

The fourth proportional to 51,988.68, 77,982.96 and 20,845.80 is: 31,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,988.68 : 77,982.96 = 20,845.80 : x
  2. Step 2: Convert to fraction form
    51,988.68/77,982.96 = 20,845.80/x
  3. Step 3: Cross multiply
    51,988.68x = 77,982.96 × 20,845.80
  4. Step 4: Simplify right side
    51,988.68x = 1,625,617,187.57
  5. Step 5: Solve for x
    x = 1,625,617,187.57/51,988.68
  6. Step 6: Final answer
    x = 31,268.68

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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.