Home / 79,161.30-109,215.47-45,145.22

Finding the Fourth Proportional to 79,161.30, 109,215.47 and 45,145.22

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Solution

The fourth proportional to 79,161.30, 109,215.47 and 45,145.22 is: 62,284.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,161.30 : 109,215.47 = 45,145.22 : x
  2. Step 2: Convert to fraction form
    79,161.30/109,215.47 = 45,145.22/x
  3. Step 3: Cross multiply
    79,161.30x = 109,215.47 × 45,145.22
  4. Step 4: Simplify right side
    79,161.30x = 4,930,555,987.34
  5. Step 5: Solve for x
    x = 4,930,555,987.34/79,161.30
  6. Step 6: Final answer
    x = 62,284.93

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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.