Home / 54,637.20-81,975.48-21,381.12

Finding the Fourth Proportional to 54,637.20, 81,975.48 and 21,381.12

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Solution

The fourth proportional to 54,637.20, 81,975.48 and 21,381.12 is: 32,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,637.20 : 81,975.48 = 21,381.12 : x
  2. Step 2: Convert to fraction form
    54,637.20/81,975.48 = 21,381.12/x
  3. Step 3: Cross multiply
    54,637.20x = 81,975.48 × 21,381.12
  4. Step 4: Simplify right side
    54,637.20x = 1,752,727,574.94
  5. Step 5: Solve for x
    x = 1,752,727,574.94/54,637.20
  6. Step 6: Final answer
    x = 32,079.38

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1.5x scale

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.