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Finding the Fourth Proportional to 71,051.11, 98,051.21 and 39,219.32

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Solution

The fourth proportional to 71,051.11, 98,051.21 and 39,219.32 is: 54,123.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,051.11 : 98,051.21 = 39,219.32 : x
  2. Step 2: Convert to fraction form
    71,051.11/98,051.21 = 39,219.32/x
  3. Step 3: Cross multiply
    71,051.11x = 98,051.21 × 39,219.32
  4. Step 4: Simplify right side
    71,051.11x = 3,845,501,977.48
  5. Step 5: Solve for x
    x = 3,845,501,977.48/71,051.11
  6. Step 6: Final answer
    x = 54,123.04

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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.