Home / 54,434.49-81,656.90-21,157.12

Finding the Fourth Proportional to 54,434.49, 81,656.90 and 21,157.12

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Solution

The fourth proportional to 54,434.49, 81,656.90 and 21,157.12 is: 31,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,434.49 : 81,656.90 = 21,157.12 : x
  2. Step 2: Convert to fraction form
    54,434.49/81,656.90 = 21,157.12/x
  3. Step 3: Cross multiply
    54,434.49x = 81,656.90 × 21,157.12
  4. Step 4: Simplify right side
    54,434.49x = 1,727,624,832.13
  5. Step 5: Solve for x
    x = 1,727,624,832.13/54,434.49
  6. Step 6: Final answer
    x = 31,737.69

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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.