Home / 55,390.23-83,128.95-20,339.91

Finding the Fourth Proportional to 55,390.23, 83,128.95 and 20,339.91

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Solution

The fourth proportional to 55,390.23, 83,128.95 and 20,339.91 is: 30,525.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390.23 : 83,128.95 = 20,339.91 : x
  2. Step 2: Convert to fraction form
    55,390.23/83,128.95 = 20,339.91/x
  3. Step 3: Cross multiply
    55,390.23x = 83,128.95 × 20,339.91
  4. Step 4: Simplify right side
    55,390.23x = 1,690,835,361.39
  5. Step 5: Solve for x
    x = 1,690,835,361.39/55,390.23
  6. Step 6: Final answer
    x = 30,525.88

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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.