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Finding the Fourth Proportional to 28,519.48, 42,478.48 and 27,240.20

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Solution

The fourth proportional to 28,519.48, 42,478.48 and 27,240.20 is: 40,573.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.48 : 42,478.48 = 27,240.20 : x
  2. Step 2: Convert to fraction form
    28,519.48/42,478.48 = 27,240.20/x
  3. Step 3: Cross multiply
    28,519.48x = 42,478.48 × 27,240.20
  4. Step 4: Simplify right side
    28,519.48x = 1,157,122,290.90
  5. Step 5: Solve for x
    x = 1,157,122,290.90/28,519.48
  6. Step 6: Final answer
    x = 40,573.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.