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Finding the Fourth Proportional to 88,775.90, 132,991.05 and 53,611.10

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Solution

The fourth proportional to 88,775.90, 132,991.05 and 53,611.10 is: 80,312.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,775.90 : 132,991.05 = 53,611.10 : x
  2. Step 2: Convert to fraction form
    88,775.90/132,991.05 = 53,611.10/x
  3. Step 3: Cross multiply
    88,775.90x = 132,991.05 × 53,611.10
  4. Step 4: Simplify right side
    88,775.90x = 7,129,796,480.66
  5. Step 5: Solve for x
    x = 7,129,796,480.66/88,775.90
  6. Step 6: Final answer
    x = 80,312.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.