Home / 45,687.20-63,039.12-31,517.60

Finding the Fourth Proportional to 45,687.20, 63,039.12 and 31,517.60

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Solution

The fourth proportional to 45,687.20, 63,039.12 and 31,517.60 is: 43,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,687.20 : 63,039.12 = 31,517.60 : x
  2. Step 2: Convert to fraction form
    45,687.20/63,039.12 = 31,517.60/x
  3. Step 3: Cross multiply
    45,687.20x = 63,039.12 × 31,517.60
  4. Step 4: Simplify right side
    45,687.20x = 1,986,841,768.51
  5. Step 5: Solve for x
    x = 1,986,841,768.51/45,687.20
  6. Step 6: Final answer
    x = 43,487.93

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1.5x scale

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.