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Finding the Fourth Proportional to 75,872.70, 113,809.05 and 36,420.30

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Solution

The fourth proportional to 75,872.70, 113,809.05 and 36,420.30 is: 54,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,872.70 : 113,809.05 = 36,420.30 : x
  2. Step 2: Convert to fraction form
    75,872.70/113,809.05 = 36,420.30/x
  3. Step 3: Cross multiply
    75,872.70x = 113,809.05 × 36,420.30
  4. Step 4: Simplify right side
    75,872.70x = 4,144,959,743.72
  5. Step 5: Solve for x
    x = 4,144,959,743.72/75,872.70
  6. Step 6: Final answer
    x = 54,630.45

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1.5x scale

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.