Home / 56,138.08-77,469.30-30,644.92

Finding the Fourth Proportional to 56,138.08, 77,469.30 and 30,644.92

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Solution

The fourth proportional to 56,138.08, 77,469.30 and 30,644.92 is: 42,289.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,138.08 : 77,469.30 = 30,644.92 : x
  2. Step 2: Convert to fraction form
    56,138.08/77,469.30 = 30,644.92/x
  3. Step 3: Cross multiply
    56,138.08x = 77,469.30 × 30,644.92
  4. Step 4: Simplify right side
    56,138.08x = 2,374,040,500.96
  5. Step 5: Solve for x
    x = 2,374,040,500.96/56,138.08
  6. Step 6: Final answer
    x = 42,289.31

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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.