Home / 85,109.10-127,608.84-40,734.78

Finding the Fourth Proportional to 85,109.10, 127,608.84 and 40,734.78

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Solution

The fourth proportional to 85,109.10, 127,608.84 and 40,734.78 is: 61,075.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,109.10 : 127,608.84 = 40,734.78 : x
  2. Step 2: Convert to fraction form
    85,109.10/127,608.84 = 40,734.78/x
  3. Step 3: Cross multiply
    85,109.10x = 127,608.84 × 40,734.78
  4. Step 4: Simplify right side
    85,109.10x = 5,198,118,023.46
  5. Step 5: Solve for x
    x = 5,198,118,023.46/85,109.10
  6. Step 6: Final answer
    x = 61,075.94

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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.