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Finding the Fourth Proportional to 77,452.30, 106,875.50 and 43,453.72

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Solution

The fourth proportional to 77,452.30, 106,875.50 and 43,453.72 is: 59,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,452.30 : 106,875.50 = 43,453.72 : x
  2. Step 2: Convert to fraction form
    77,452.30/106,875.50 = 43,453.72/x
  3. Step 3: Cross multiply
    77,452.30x = 106,875.50 × 43,453.72
  4. Step 4: Simplify right side
    77,452.30x = 4,644,137,611.44
  5. Step 5: Solve for x
    x = 4,644,137,611.44/77,452.30
  6. Step 6: Final answer
    x = 59,961.26

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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.