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Finding the Fourth Proportional to 48,973.99, 73,488.67 and 20,891.40

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Solution

The fourth proportional to 48,973.99, 73,488.67 and 20,891.40 is: 31,348.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,973.99 : 73,488.67 = 20,891.40 : x
  2. Step 2: Convert to fraction form
    48,973.99/73,488.67 = 20,891.40/x
  3. Step 3: Cross multiply
    48,973.99x = 73,488.67 × 20,891.40
  4. Step 4: Simplify right side
    48,973.99x = 1,535,280,728.54
  5. Step 5: Solve for x
    x = 1,535,280,728.54/48,973.99
  6. Step 6: Final answer
    x = 31,348.90

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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.