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Finding the Fourth Proportional to 72,560.22, 108,868.32 and 28,218.24

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Solution

The fourth proportional to 72,560.22, 108,868.32 and 28,218.24 is: 42,338.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,560.22 : 108,868.32 = 28,218.24 : x
  2. Step 2: Convert to fraction form
    72,560.22/108,868.32 = 28,218.24/x
  3. Step 3: Cross multiply
    72,560.22x = 108,868.32 × 28,218.24
  4. Step 4: Simplify right side
    72,560.22x = 3,072,072,382.16
  5. Step 5: Solve for x
    x = 3,072,072,382.16/72,560.22
  6. Step 6: Final answer
    x = 42,338.25

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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.