Home / 77,138.38-115,753.55-34,440.49

Finding the Fourth Proportional to 77,138.38, 115,753.55 and 34,440.49

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Solution

The fourth proportional to 77,138.38, 115,753.55 and 34,440.49 is: 51,681.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,138.38 : 115,753.55 = 34,440.49 : x
  2. Step 2: Convert to fraction form
    77,138.38/115,753.55 = 34,440.49/x
  3. Step 3: Cross multiply
    77,138.38x = 115,753.55 × 34,440.49
  4. Step 4: Simplify right side
    77,138.38x = 3,986,609,598.46
  5. Step 5: Solve for x
    x = 3,986,609,598.46/77,138.38
  6. Step 6: Final answer
    x = 51,681.27

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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.