Home / 55,390.89-76,439.03-30,240.39

Finding the Fourth Proportional to 55,390.89, 76,439.03 and 30,240.39

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Solution

The fourth proportional to 55,390.89, 76,439.03 and 30,240.39 is: 41,731.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390.89 : 76,439.03 = 30,240.39 : x
  2. Step 2: Convert to fraction form
    55,390.89/76,439.03 = 30,240.39/x
  3. Step 3: Cross multiply
    55,390.89x = 76,439.03 × 30,240.39
  4. Step 4: Simplify right side
    55,390.89x = 2,311,546,078.42
  5. Step 5: Solve for x
    x = 2,311,546,078.42/55,390.89
  6. Step 6: Final answer
    x = 41,731.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.