Home / 70,733.72-106,117.43-20,815.44

Finding the Fourth Proportional to 70,733.72, 106,117.43 and 20,815.44

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Solution

The fourth proportional to 70,733.72, 106,117.43 and 20,815.44 is: 31,228.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,733.72 : 106,117.43 = 20,815.44 : x
  2. Step 2: Convert to fraction form
    70,733.72/106,117.43 = 20,815.44/x
  3. Step 3: Cross multiply
    70,733.72x = 106,117.43 × 20,815.44
  4. Step 4: Simplify right side
    70,733.72x = 2,208,881,103.75
  5. Step 5: Solve for x
    x = 2,208,881,103.75/70,733.72
  6. Step 6: Final answer
    x = 31,228.12

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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.