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Finding the Fourth Proportional to 48,153, 72,243.90 and 20,453.16

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Solution

The fourth proportional to 48,153, 72,243.90 and 20,453.16 is: 30,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,153 : 72,243.90 = 20,453.16 : x
  2. Step 2: Convert to fraction form
    48,153/72,243.90 = 20,453.16/x
  3. Step 3: Cross multiply
    48,153x = 72,243.90 × 20,453.16
  4. Step 4: Simplify right side
    48,153x = 1,477,616,045.72
  5. Step 5: Solve for x
    x = 1,477,616,045.72/48,153
  6. Step 6: Final answer
    x = 30,685.86

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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.