Home / 85,280.12-127,949.69-29,159.73

Finding the Fourth Proportional to 85,280.12, 127,949.69 and 29,159.73

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Solution

The fourth proportional to 85,280.12, 127,949.69 and 29,159.73 is: 43,749.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,280.12 : 127,949.69 = 29,159.73 : x
  2. Step 2: Convert to fraction form
    85,280.12/127,949.69 = 29,159.73/x
  3. Step 3: Cross multiply
    85,280.12x = 127,949.69 × 29,159.73
  4. Step 4: Simplify right side
    85,280.12x = 3,730,978,413.98
  5. Step 5: Solve for x
    x = 3,730,978,413.98/85,280.12
  6. Step 6: Final answer
    x = 43,749.69

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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.