Home / 39,808.72-54,957.18-30,836.08

Finding the Fourth Proportional to 39,808.72, 54,957.18 and 30,836.08

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Solution

The fourth proportional to 39,808.72, 54,957.18 and 30,836.08 is: 42,570.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,808.72 : 54,957.18 = 30,836.08 : x
  2. Step 2: Convert to fraction form
    39,808.72/54,957.18 = 30,836.08/x
  3. Step 3: Cross multiply
    39,808.72x = 54,957.18 × 30,836.08
  4. Step 4: Simplify right side
    39,808.72x = 1,694,663,999.05
  5. Step 5: Solve for x
    x = 1,694,663,999.05/39,808.72
  6. Step 6: Final answer
    x = 42,570.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.