Home / 55,916.90-83,872.61-20,853.82

Finding the Fourth Proportional to 55,916.90, 83,872.61 and 20,853.82

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Solution

The fourth proportional to 55,916.90, 83,872.61 and 20,853.82 is: 31,279.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,916.90 : 83,872.61 = 20,853.82 : x
  2. Step 2: Convert to fraction form
    55,916.90/83,872.61 = 20,853.82/x
  3. Step 3: Cross multiply
    55,916.90x = 83,872.61 × 20,853.82
  4. Step 4: Simplify right side
    55,916.90x = 1,749,064,154.32
  5. Step 5: Solve for x
    x = 1,749,064,154.32/55,916.90
  6. Step 6: Final answer
    x = 31,279.71

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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.