Home / 79,081.40-109,131.32-45,088.80

Finding the Fourth Proportional to 79,081.40, 109,131.32 and 45,088.80

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Solution

The fourth proportional to 79,081.40, 109,131.32 and 45,088.80 is: 62,221.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,081.40 : 109,131.32 = 45,088.80 : x
  2. Step 2: Convert to fraction form
    79,081.40/109,131.32 = 45,088.80/x
  3. Step 3: Cross multiply
    79,081.40x = 109,131.32 × 45,088.80
  4. Step 4: Simplify right side
    79,081.40x = 4,920,600,261.22
  5. Step 5: Solve for x
    x = 4,920,600,261.22/79,081.40
  6. Step 6: Final answer
    x = 62,221.97

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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.