Home / 55,031.81-82,501.07-21,775.33

Finding the Fourth Proportional to 55,031.81, 82,501.07 and 21,775.33

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Solution

The fourth proportional to 55,031.81, 82,501.07 and 21,775.33 is: 32,644.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,031.81 : 82,501.07 = 21,775.33 : x
  2. Step 2: Convert to fraction form
    55,031.81/82,501.07 = 21,775.33/x
  3. Step 3: Cross multiply
    55,031.81x = 82,501.07 × 21,775.33
  4. Step 4: Simplify right side
    55,031.81x = 1,796,487,872.79
  5. Step 5: Solve for x
    x = 1,796,487,872.79/55,031.81
  6. Step 6: Final answer
    x = 32,644.54

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1.5x scale

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.