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Finding the Fourth Proportional to 77,304.40, 115,972.60 and 44,040.40

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Solution

The fourth proportional to 77,304.40, 115,972.60 and 44,040.40 is: 66,069.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,304.40 : 115,972.60 = 44,040.40 : x
  2. Step 2: Convert to fraction form
    77,304.40/115,972.60 = 44,040.40/x
  3. Step 3: Cross multiply
    77,304.40x = 115,972.60 × 44,040.40
  4. Step 4: Simplify right side
    77,304.40x = 5,107,479,693.04
  5. Step 5: Solve for x
    x = 5,107,479,693.04/77,304.40
  6. Step 6: Final answer
    x = 66,069.72

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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.