Home / 54,436.19-81,622.50-21,117.32

Finding the Fourth Proportional to 54,436.19, 81,622.50 and 21,117.32

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Solution

The fourth proportional to 54,436.19, 81,622.50 and 21,117.32 is: 31,663.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,436.19 : 81,622.50 = 21,117.32 : x
  2. Step 2: Convert to fraction form
    54,436.19/81,622.50 = 21,117.32/x
  3. Step 3: Cross multiply
    54,436.19x = 81,622.50 × 21,117.32
  4. Step 4: Simplify right side
    54,436.19x = 1,723,648,451.70
  5. Step 5: Solve for x
    x = 1,723,648,451.70/54,436.19
  6. Step 6: Final answer
    x = 31,663.65

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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.