Home / 75,411.18-113,131.34-28,660.41

Finding the Fourth Proportional to 75,411.18, 113,131.34 and 28,660.41

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Solution

The fourth proportional to 75,411.18, 113,131.34 and 28,660.41 is: 42,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,411.18 : 113,131.34 = 28,660.41 : x
  2. Step 2: Convert to fraction form
    75,411.18/113,131.34 = 28,660.41/x
  3. Step 3: Cross multiply
    75,411.18x = 113,131.34 × 28,660.41
  4. Step 4: Simplify right side
    75,411.18x = 3,242,390,659.90
  5. Step 5: Solve for x
    x = 3,242,390,659.90/75,411.18
  6. Step 6: Final answer
    x = 42,996.15

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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.