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Finding the Fourth Proportional to 48,808.40, 73,215.80 and 13,749.20

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Solution

The fourth proportional to 48,808.40, 73,215.80 and 13,749.20 is: 20,624.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,808.40 : 73,215.80 = 13,749.20 : x
  2. Step 2: Convert to fraction form
    48,808.40/73,215.80 = 13,749.20/x
  3. Step 3: Cross multiply
    48,808.40x = 73,215.80 × 13,749.20
  4. Step 4: Simplify right side
    48,808.40x = 1,006,658,677.36
  5. Step 5: Solve for x
    x = 1,006,658,677.36/48,808.40
  6. Step 6: Final answer
    x = 20,624.70

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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.