Home / 72,866.07-109,299.15-20,275.65

Finding the Fourth Proportional to 72,866.07, 109,299.15 and 20,275.65

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Solution

The fourth proportional to 72,866.07, 109,299.15 and 20,275.65 is: 30,413.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,866.07 : 109,299.15 = 20,275.65 : x
  2. Step 2: Convert to fraction form
    72,866.07/109,299.15 = 20,275.65/x
  3. Step 3: Cross multiply
    72,866.07x = 109,299.15 × 20,275.65
  4. Step 4: Simplify right side
    72,866.07x = 2,216,111,310.70
  5. Step 5: Solve for x
    x = 2,216,111,310.70/72,866.07
  6. Step 6: Final answer
    x = 30,413.49

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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.