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Finding the Fourth Proportional to 75,255.40, 113,012.70 and 53,223.40

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Solution

The fourth proportional to 75,255.40, 113,012.70 and 53,223.40 is: 79,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,255.40 : 113,012.70 = 53,223.40 : x
  2. Step 2: Convert to fraction form
    75,255.40/113,012.70 = 53,223.40/x
  3. Step 3: Cross multiply
    75,255.40x = 113,012.70 × 53,223.40
  4. Step 4: Simplify right side
    75,255.40x = 6,014,920,137.18
  5. Step 5: Solve for x
    x = 6,014,920,137.18/75,255.40
  6. Step 6: Final answer
    x = 79,926.76

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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.