Home / 72,712.11-109,126.49-37,661.79

Finding the Fourth Proportional to 72,712.11, 109,126.49 and 37,661.79

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Solution

The fourth proportional to 72,712.11, 109,126.49 and 37,661.79 is: 56,522.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,712.11 : 109,126.49 = 37,661.79 : x
  2. Step 2: Convert to fraction form
    72,712.11/109,126.49 = 37,661.79/x
  3. Step 3: Cross multiply
    72,712.11x = 109,126.49 × 37,661.79
  4. Step 4: Simplify right side
    72,712.11x = 4,109,898,949.82
  5. Step 5: Solve for x
    x = 4,109,898,949.82/72,712.11
  6. Step 6: Final answer
    x = 56,522.89

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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.