Home / 79,036.85-109,020.98-55,154.81

Finding the Fourth Proportional to 79,036.85, 109,020.98 and 55,154.81

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Solution

The fourth proportional to 79,036.85, 109,020.98 and 55,154.81 is: 76,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,036.85 : 109,020.98 = 55,154.81 : x
  2. Step 2: Convert to fraction form
    79,036.85/109,020.98 = 55,154.81/x
  3. Step 3: Cross multiply
    79,036.85x = 109,020.98 × 55,154.81
  4. Step 4: Simplify right side
    79,036.85x = 6,013,030,617.03
  5. Step 5: Solve for x
    x = 6,013,030,617.03/79,036.85
  6. Step 6: Final answer
    x = 76,078.83

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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.