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Finding the Fourth Proportional to 48,810.40, 73,218.80 and 13,751.20

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Solution

The fourth proportional to 48,810.40, 73,218.80 and 13,751.20 is: 20,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,810.40 : 73,218.80 = 13,751.20 : x
  2. Step 2: Convert to fraction form
    48,810.40/73,218.80 = 13,751.20/x
  3. Step 3: Cross multiply
    48,810.40x = 73,218.80 × 13,751.20
  4. Step 4: Simplify right side
    48,810.40x = 1,006,846,362.56
  5. Step 5: Solve for x
    x = 1,006,846,362.56/48,810.40
  6. Step 6: Final answer
    x = 20,627.70

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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.