Home / 79,128.38-118,692.57-26,537.72

Finding the Fourth Proportional to 79,128.38, 118,692.57 and 26,537.72

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Solution

The fourth proportional to 79,128.38, 118,692.57 and 26,537.72 is: 39,806.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,128.38 : 118,692.57 = 26,537.72 : x
  2. Step 2: Convert to fraction form
    79,128.38/118,692.57 = 26,537.72/x
  3. Step 3: Cross multiply
    79,128.38x = 118,692.57 × 26,537.72
  4. Step 4: Simplify right side
    79,128.38x = 3,149,829,595.28
  5. Step 5: Solve for x
    x = 3,149,829,595.28/79,128.38
  6. Step 6: Final answer
    x = 39,806.57

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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.