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Finding the Fourth Proportional to 40,640.84, 60,968.84 and 18,455.76

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Solution

The fourth proportional to 40,640.84, 60,968.84 and 18,455.76 is: 27,687.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640.84 : 60,968.84 = 18,455.76 : x
  2. Step 2: Convert to fraction form
    40,640.84/60,968.84 = 18,455.76/x
  3. Step 3: Cross multiply
    40,640.84x = 60,968.84 × 18,455.76
  4. Step 4: Simplify right side
    40,640.84x = 1,125,226,278.52
  5. Step 5: Solve for x
    x = 1,125,226,278.52/40,640.84
  6. Step 6: Final answer
    x = 27,687.08

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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.