Home / 87,079.05-120,180.21-51,272.39

Finding the Fourth Proportional to 87,079.05, 120,180.21 and 51,272.39

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Solution

The fourth proportional to 87,079.05, 120,180.21 and 51,272.39 is: 70,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,079.05 : 120,180.21 = 51,272.39 : x
  2. Step 2: Convert to fraction form
    87,079.05/120,180.21 = 51,272.39/x
  3. Step 3: Cross multiply
    87,079.05x = 120,180.21 × 51,272.39
  4. Step 4: Simplify right side
    87,079.05x = 6,161,926,705.58
  5. Step 5: Solve for x
    x = 6,161,926,705.58/87,079.05
  6. Step 6: Final answer
    x = 70,762.45

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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.