Home / 80,803.21-121,204.86-38,673.39

Finding the Fourth Proportional to 80,803.21, 121,204.86 and 38,673.39

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Solution

The fourth proportional to 80,803.21, 121,204.86 and 38,673.39 is: 58,010.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,803.21 : 121,204.86 = 38,673.39 : x
  2. Step 2: Convert to fraction form
    80,803.21/121,204.86 = 38,673.39/x
  3. Step 3: Cross multiply
    80,803.21x = 121,204.86 × 38,673.39
  4. Step 4: Simplify right side
    80,803.21x = 4,687,402,820.68
  5. Step 5: Solve for x
    x = 4,687,402,820.68/80,803.21
  6. Step 6: Final answer
    x = 58,010.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.