Home / 39,422.72-54,429.90-30,331.91

Finding the Fourth Proportional to 39,422.72, 54,429.90 and 30,331.91

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Solution

The fourth proportional to 39,422.72, 54,429.90 and 30,331.91 is: 41,878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,422.72 : 54,429.90 = 30,331.91 : x
  2. Step 2: Convert to fraction form
    39,422.72/54,429.90 = 30,331.91/x
  3. Step 3: Cross multiply
    39,422.72x = 54,429.90 × 30,331.91
  4. Step 4: Simplify right side
    39,422.72x = 1,650,962,828.11
  5. Step 5: Solve for x
    x = 1,650,962,828.11/39,422.72
  6. Step 6: Final answer
    x = 41,878.46

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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.