Home / 70,623.36-105,934.32-21,375.36

Finding the Fourth Proportional to 70,623.36, 105,934.32 and 21,375.36

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Solution

The fourth proportional to 70,623.36, 105,934.32 and 21,375.36 is: 32,062.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,623.36 : 105,934.32 = 21,375.36 : x
  2. Step 2: Convert to fraction form
    70,623.36/105,934.32 = 21,375.36/x
  3. Step 3: Cross multiply
    70,623.36x = 105,934.32 × 21,375.36
  4. Step 4: Simplify right side
    70,623.36x = 2,264,384,226.36
  5. Step 5: Solve for x
    x = 2,264,384,226.36/70,623.36
  6. Step 6: Final answer
    x = 32,062.82

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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.