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Finding the Fourth Proportional to 48,877.40, 73,286.40 and 19,261.10

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Solution

The fourth proportional to 48,877.40, 73,286.40 and 19,261.10 is: 28,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,877.40 : 73,286.40 = 19,261.10 : x
  2. Step 2: Convert to fraction form
    48,877.40/73,286.40 = 19,261.10/x
  3. Step 3: Cross multiply
    48,877.40x = 73,286.40 × 19,261.10
  4. Step 4: Simplify right side
    48,877.40x = 1,411,576,679.04
  5. Step 5: Solve for x
    x = 1,411,576,679.04/48,877.40
  6. Step 6: Final answer
    x = 28,879.95

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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.