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Finding the Fourth Proportional to 86,288.90, 129,413.84 and 33,671.30

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Solution

The fourth proportional to 86,288.90, 129,413.84 and 33,671.30 is: 50,499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,288.90 : 129,413.84 = 33,671.30 : x
  2. Step 2: Convert to fraction form
    86,288.90/129,413.84 = 33,671.30/x
  3. Step 3: Cross multiply
    86,288.90x = 129,413.84 × 33,671.30
  4. Step 4: Simplify right side
    86,288.90x = 4,357,532,230.79
  5. Step 5: Solve for x
    x = 4,357,532,230.79/86,288.90
  6. Step 6: Final answer
    x = 50,499.34

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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.