Home / 85,280.17-127,920.57-26,115.60

Finding the Fourth Proportional to 85,280.17, 127,920.57 and 26,115.60

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Solution

The fourth proportional to 85,280.17, 127,920.57 and 26,115.60 is: 39,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,280.17 : 127,920.57 = 26,115.60 : x
  2. Step 2: Convert to fraction form
    85,280.17/127,920.57 = 26,115.60/x
  3. Step 3: Cross multiply
    85,280.17x = 127,920.57 × 26,115.60
  4. Step 4: Simplify right side
    85,280.17x = 3,340,722,437.89
  5. Step 5: Solve for x
    x = 3,340,722,437.89/85,280.17
  6. Step 6: Final answer
    x = 39,173.50

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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.