Home / 85,576.50-128,317.77-29,385.18

Finding the Fourth Proportional to 85,576.50, 128,317.77 and 29,385.18

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Solution

The fourth proportional to 85,576.50, 128,317.77 and 29,385.18 is: 44,061.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,576.50 : 128,317.77 = 29,385.18 : x
  2. Step 2: Convert to fraction form
    85,576.50/128,317.77 = 29,385.18/x
  3. Step 3: Cross multiply
    85,576.50x = 128,317.77 × 29,385.18
  4. Step 4: Simplify right side
    85,576.50x = 3,770,640,768.65
  5. Step 5: Solve for x
    x = 3,770,640,768.65/85,576.50
  6. Step 6: Final answer
    x = 44,061.64

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1.5x scale

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.