Home / 45,857.49-68,727.02-20,538.51

Finding the Fourth Proportional to 45,857.49, 68,727.02 and 20,538.51

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Solution

The fourth proportional to 45,857.49, 68,727.02 and 20,538.51 is: 30,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,857.49 : 68,727.02 = 20,538.51 : x
  2. Step 2: Convert to fraction form
    45,857.49/68,727.02 = 20,538.51/x
  3. Step 3: Cross multiply
    45,857.49x = 68,727.02 × 20,538.51
  4. Step 4: Simplify right side
    45,857.49x = 1,411,550,587.54
  5. Step 5: Solve for x
    x = 1,411,550,587.54/45,857.49
  6. Step 6: Final answer
    x = 30,781.24

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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.