Home / 81,977.81-123,002.48-28,708.02

Finding the Fourth Proportional to 81,977.81, 123,002.48 and 28,708.02

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Solution

The fourth proportional to 81,977.81, 123,002.48 and 28,708.02 is: 43,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,977.81 : 123,002.48 = 28,708.02 : x
  2. Step 2: Convert to fraction form
    81,977.81/123,002.48 = 28,708.02/x
  3. Step 3: Cross multiply
    81,977.81x = 123,002.48 × 28,708.02
  4. Step 4: Simplify right side
    81,977.81x = 3,531,157,655.89
  5. Step 5: Solve for x
    x = 3,531,157,655.89/81,977.81
  6. Step 6: Final answer
    x = 43,074.55

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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.