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Finding the Fourth Proportional to 71,862.72, 99,168.48 and 41,648.64

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Solution

The fourth proportional to 71,862.72, 99,168.48 and 41,648.64 is: 57,473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,862.72 : 99,168.48 = 41,648.64 : x
  2. Step 2: Convert to fraction form
    71,862.72/99,168.48 = 41,648.64/x
  3. Step 3: Cross multiply
    71,862.72x = 99,168.48 × 41,648.64
  4. Step 4: Simplify right side
    71,862.72x = 4,130,232,322.87
  5. Step 5: Solve for x
    x = 4,130,232,322.87/71,862.72
  6. Step 6: Final answer
    x = 57,473.92

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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.