Home / 42,616.09-63,939.73-19,830.81

Finding the Fourth Proportional to 42,616.09, 63,939.73 and 19,830.81

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Solution

The fourth proportional to 42,616.09, 63,939.73 and 19,830.81 is: 29,753.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,616.09 : 63,939.73 = 19,830.81 : x
  2. Step 2: Convert to fraction form
    42,616.09/63,939.73 = 19,830.81/x
  3. Step 3: Cross multiply
    42,616.09x = 63,939.73 × 19,830.81
  4. Step 4: Simplify right side
    42,616.09x = 1,267,976,537.93
  5. Step 5: Solve for x
    x = 1,267,976,537.93/42,616.09
  6. Step 6: Final answer
    x = 29,753.47

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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.