Home / 39,723.20-59,455.20-31,860.80

Finding the Fourth Proportional to 39,723.20, 59,455.20 and 31,860.80

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Solution

The fourth proportional to 39,723.20, 59,455.20 and 31,860.80 is: 47,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.20 : 59,455.20 = 31,860.80 : x
  2. Step 2: Convert to fraction form
    39,723.20/59,455.20 = 31,860.80/x
  3. Step 3: Cross multiply
    39,723.20x = 59,455.20 × 31,860.80
  4. Step 4: Simplify right side
    39,723.20x = 1,894,290,236.16
  5. Step 5: Solve for x
    x = 1,894,290,236.16/39,723.20
  6. Step 6: Final answer
    x = 47,687.25

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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.