Home / 79,818.34-110,624.77-78,323.66

Finding the Fourth Proportional to 79,818.34, 110,624.77 and 78,323.66

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Solution

The fourth proportional to 79,818.34, 110,624.77 and 78,323.66 is: 108,553.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,818.34 : 110,624.77 = 78,323.66 : x
  2. Step 2: Convert to fraction form
    79,818.34/110,624.77 = 78,323.66/x
  3. Step 3: Cross multiply
    79,818.34x = 110,624.77 × 78,323.66
  4. Step 4: Simplify right side
    79,818.34x = 8,664,537,364.10
  5. Step 5: Solve for x
    x = 8,664,537,364.10/79,818.34
  6. Step 6: Final answer
    x = 108,553.22

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.