Home / 54,018.40-74,515.44-31,658.08

Finding the Fourth Proportional to 54,018.40, 74,515.44 and 31,658.08

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Solution

The fourth proportional to 54,018.40, 74,515.44 and 31,658.08 is: 43,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,018.40 : 74,515.44 = 31,658.08 : x
  2. Step 2: Convert to fraction form
    54,018.40/74,515.44 = 31,658.08/x
  3. Step 3: Cross multiply
    54,018.40x = 74,515.44 × 31,658.08
  4. Step 4: Simplify right side
    54,018.40x = 2,359,015,760.76
  5. Step 5: Solve for x
    x = 2,359,015,760.76/54,018.40
  6. Step 6: Final answer
    x = 43,670.60

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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.