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Finding the Fourth Proportional to 71,202.72, 98,258.96 and 39,372.32

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Solution

The fourth proportional to 71,202.72, 98,258.96 and 39,372.32 is: 54,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,202.72 : 98,258.96 = 39,372.32 : x
  2. Step 2: Convert to fraction form
    71,202.72/98,258.96 = 39,372.32/x
  3. Step 3: Cross multiply
    71,202.72x = 98,258.96 × 39,372.32
  4. Step 4: Simplify right side
    71,202.72x = 3,868,683,215.99
  5. Step 5: Solve for x
    x = 3,868,683,215.99/71,202.72
  6. Step 6: Final answer
    x = 54,333.36

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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.