Home / 86,288.40-129,413.09-33,670.80

Finding the Fourth Proportional to 86,288.40, 129,413.09 and 33,670.80

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Solution

The fourth proportional to 86,288.40, 129,413.09 and 33,670.80 is: 50,498.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,288.40 : 129,413.09 = 33,670.80 : x
  2. Step 2: Convert to fraction form
    86,288.40/129,413.09 = 33,670.80/x
  3. Step 3: Cross multiply
    86,288.40x = 129,413.09 × 33,670.80
  4. Step 4: Simplify right side
    86,288.40x = 4,357,442,270.77
  5. Step 5: Solve for x
    x = 4,357,442,270.77/86,288.40
  6. Step 6: Final answer
    x = 50,498.59

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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.