Home / 48,620.13-72,942.50-13,559.78

Finding the Fourth Proportional to 48,620.13, 72,942.50 and 13,559.78

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Solution

The fourth proportional to 48,620.13, 72,942.50 and 13,559.78 is: 20,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,620.13 : 72,942.50 = 13,559.78 : x
  2. Step 2: Convert to fraction form
    48,620.13/72,942.50 = 13,559.78/x
  3. Step 3: Cross multiply
    48,620.13x = 72,942.50 × 13,559.78
  4. Step 4: Simplify right side
    48,620.13x = 989,084,252.65
  5. Step 5: Solve for x
    x = 989,084,252.65/48,620.13
  6. Step 6: Final answer
    x = 20,343.10

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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.