Home / 55,289.40-76,299.37-30,138.90

Finding the Fourth Proportional to 55,289.40, 76,299.37 and 30,138.90

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Solution

The fourth proportional to 55,289.40, 76,299.37 and 30,138.90 is: 41,591.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,289.40 : 76,299.37 = 30,138.90 : x
  2. Step 2: Convert to fraction form
    55,289.40/76,299.37 = 30,138.90/x
  3. Step 3: Cross multiply
    55,289.40x = 76,299.37 × 30,138.90
  4. Step 4: Simplify right side
    55,289.40x = 2,299,578,721.02
  5. Step 5: Solve for x
    x = 2,299,578,721.02/55,289.40
  6. Step 6: Final answer
    x = 41,591.68

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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.