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Finding the Fourth Proportional to 71,888.76, 99,202.46 and 39,622.32

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Solution

The fourth proportional to 71,888.76, 99,202.46 and 39,622.32 is: 54,676.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,888.76 : 99,202.46 = 39,622.32 : x
  2. Step 2: Convert to fraction form
    71,888.76/99,202.46 = 39,622.32/x
  3. Step 3: Cross multiply
    71,888.76x = 99,202.46 × 39,622.32
  4. Step 4: Simplify right side
    71,888.76x = 3,930,631,614.91
  5. Step 5: Solve for x
    x = 3,930,631,614.91/71,888.76
  6. Step 6: Final answer
    x = 54,676.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.