Home / 45,407.72-68,111.64-21,709.70

Finding the Fourth Proportional to 45,407.72, 68,111.64 and 21,709.70

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Solution

The fourth proportional to 45,407.72, 68,111.64 and 21,709.70 is: 32,564.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,407.72 : 68,111.64 = 21,709.70 : x
  2. Step 2: Convert to fraction form
    45,407.72/68,111.64 = 21,709.70/x
  3. Step 3: Cross multiply
    45,407.72x = 68,111.64 × 21,709.70
  4. Step 4: Simplify right side
    45,407.72x = 1,478,682,930.35
  5. Step 5: Solve for x
    x = 1,478,682,930.35/45,407.72
  6. Step 6: Final answer
    x = 32,564.57

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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.