Home / 53,687.81-74,089.18-31,331.81

Finding the Fourth Proportional to 53,687.81, 74,089.18 and 31,331.81

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Solution

The fourth proportional to 53,687.81, 74,089.18 and 31,331.81 is: 43,237.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,687.81 : 74,089.18 = 31,331.81 : x
  2. Step 2: Convert to fraction form
    53,687.81/74,089.18 = 31,331.81/x
  3. Step 3: Cross multiply
    53,687.81x = 74,089.18 × 31,331.81
  4. Step 4: Simplify right side
    53,687.81x = 2,321,348,335.20
  5. Step 5: Solve for x
    x = 2,321,348,335.20/53,687.81
  6. Step 6: Final answer
    x = 43,237.90

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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.