Home / 69,150.21-103,559.01-39,478.08

Finding the Fourth Proportional to 69,150.21, 103,559.01 and 39,478.08

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Solution

The fourth proportional to 69,150.21, 103,559.01 and 39,478.08 is: 59,122.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,150.21 : 103,559.01 = 39,478.08 : x
  2. Step 2: Convert to fraction form
    69,150.21/103,559.01 = 39,478.08/x
  3. Step 3: Cross multiply
    69,150.21x = 103,559.01 × 39,478.08
  4. Step 4: Simplify right side
    69,150.21x = 4,088,311,121.80
  5. Step 5: Solve for x
    x = 4,088,311,121.80/69,150.21
  6. Step 6: Final answer
    x = 59,122.18

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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.