Home / 39,404.85-54,398.75-30,432.21

Finding the Fourth Proportional to 39,404.85, 54,398.75 and 30,432.21

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Solution

The fourth proportional to 39,404.85, 54,398.75 and 30,432.21 is: 42,011.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,404.85 : 54,398.75 = 30,432.21 : x
  2. Step 2: Convert to fraction form
    39,404.85/54,398.75 = 30,432.21/x
  3. Step 3: Cross multiply
    39,404.85x = 54,398.75 × 30,432.21
  4. Step 4: Simplify right side
    39,404.85x = 1,655,474,183.74
  5. Step 5: Solve for x
    x = 1,655,474,183.74/39,404.85
  6. Step 6: Final answer
    x = 42,011.94

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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.