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Finding the Fourth Proportional to 72,382.84, 108,556.80 and 30,240.16

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Solution

The fourth proportional to 72,382.84, 108,556.80 and 30,240.16 is: 45,352.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,382.84 : 108,556.80 = 30,240.16 : x
  2. Step 2: Convert to fraction form
    72,382.84/108,556.80 = 30,240.16/x
  3. Step 3: Cross multiply
    72,382.84x = 108,556.80 × 30,240.16
  4. Step 4: Simplify right side
    72,382.84x = 3,282,775,001.09
  5. Step 5: Solve for x
    x = 3,282,775,001.09/72,382.84
  6. Step 6: Final answer
    x = 45,352.95

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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.