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Finding the Fourth Proportional to 60,476.28, 90,723.84 and 30,878.10

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Solution

The fourth proportional to 60,476.28, 90,723.84 and 30,878.10 is: 46,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,476.28 : 90,723.84 = 30,878.10 : x
  2. Step 2: Convert to fraction form
    60,476.28/90,723.84 = 30,878.10/x
  3. Step 3: Cross multiply
    60,476.28x = 90,723.84 × 30,878.10
  4. Step 4: Simplify right side
    60,476.28x = 2,801,379,803.90
  5. Step 5: Solve for x
    x = 2,801,379,803.90/60,476.28
  6. Step 6: Final answer
    x = 46,321.96

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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.