Home / 86,627.52-129,993.12-79,577.28

Finding the Fourth Proportional to 86,627.52, 129,993.12 and 79,577.28

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Solution

The fourth proportional to 86,627.52, 129,993.12 and 79,577.28 is: 119,413.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,627.52 : 129,993.12 = 79,577.28 : x
  2. Step 2: Convert to fraction form
    86,627.52/129,993.12 = 79,577.28/x
  3. Step 3: Cross multiply
    86,627.52x = 129,993.12 × 79,577.28
  4. Step 4: Simplify right side
    86,627.52x = 10,344,498,908.31
  5. Step 5: Solve for x
    x = 10,344,498,908.31/86,627.52
  6. Step 6: Final answer
    x = 119,413.54

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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.