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Finding the Fourth Proportional to 71,862, 99,170.58 and 41,649.54

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Solution

The fourth proportional to 71,862, 99,170.58 and 41,649.54 is: 57,476.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,862 : 99,170.58 = 41,649.54 : x
  2. Step 2: Convert to fraction form
    71,862/99,170.58 = 41,649.54/x
  3. Step 3: Cross multiply
    71,862x = 99,170.58 × 41,649.54
  4. Step 4: Simplify right side
    71,862x = 4,130,409,038.53
  5. Step 5: Solve for x
    x = 4,130,409,038.53/71,862
  6. Step 6: Final answer
    x = 57,476.96

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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.