Home / 75,909.40-113,864.10-74,872.60

Finding the Fourth Proportional to 75,909.40, 113,864.10 and 74,872.60

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Solution

The fourth proportional to 75,909.40, 113,864.10 and 74,872.60 is: 112,308.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,909.40 : 113,864.10 = 74,872.60 : x
  2. Step 2: Convert to fraction form
    75,909.40/113,864.10 = 74,872.60/x
  3. Step 3: Cross multiply
    75,909.40x = 113,864.10 × 74,872.60
  4. Step 4: Simplify right side
    75,909.40x = 8,525,301,213.66
  5. Step 5: Solve for x
    x = 8,525,301,213.66/75,909.40
  6. Step 6: Final answer
    x = 112,308.90

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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.