Home / 70,863.12-106,262.82-20,925.81

Finding the Fourth Proportional to 70,863.12, 106,262.82 and 20,925.81

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Solution

The fourth proportional to 70,863.12, 106,262.82 and 20,925.81 is: 31,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,863.12 : 106,262.82 = 20,925.81 : x
  2. Step 2: Convert to fraction form
    70,863.12/106,262.82 = 20,925.81/x
  3. Step 3: Cross multiply
    70,863.12x = 106,262.82 × 20,925.81
  4. Step 4: Simplify right side
    70,863.12x = 2,223,635,581.38
  5. Step 5: Solve for x
    x = 2,223,635,581.38/70,863.12
  6. Step 6: Final answer
    x = 31,379.31

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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.