Home / 42,747.09-64,121.73-20,252.49

Finding the Fourth Proportional to 42,747.09, 64,121.73 and 20,252.49

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Solution

The fourth proportional to 42,747.09, 64,121.73 and 20,252.49 is: 30,379.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.09 : 64,121.73 = 20,252.49 : x
  2. Step 2: Convert to fraction form
    42,747.09/64,121.73 = 20,252.49/x
  3. Step 3: Cross multiply
    42,747.09x = 64,121.73 × 20,252.49
  4. Step 4: Simplify right side
    42,747.09x = 1,298,624,695.61
  5. Step 5: Solve for x
    x = 1,298,624,695.61/42,747.09
  6. Step 6: Final answer
    x = 30,379.25

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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.