Home / 55,856.68-83,735.20-20,772.34

Finding the Fourth Proportional to 55,856.68, 83,735.20 and 20,772.34

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Solution

The fourth proportional to 55,856.68, 83,735.20 and 20,772.34 is: 31,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,856.68 : 83,735.20 = 20,772.34 : x
  2. Step 2: Convert to fraction form
    55,856.68/83,735.20 = 20,772.34/x
  3. Step 3: Cross multiply
    55,856.68x = 83,735.20 × 20,772.34
  4. Step 4: Simplify right side
    55,856.68x = 1,739,376,044.37
  5. Step 5: Solve for x
    x = 1,739,376,044.37/55,856.68
  6. Step 6: Final answer
    x = 31,139.98

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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.