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Finding the Fourth Proportional to 87,562, 131,362.16 and 28,403.64

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Solution

The fourth proportional to 87,562, 131,362.16 and 28,403.64 is: 42,611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,562 : 131,362.16 = 28,403.64 : x
  2. Step 2: Convert to fraction form
    87,562/131,362.16 = 28,403.64/x
  3. Step 3: Cross multiply
    87,562x = 131,362.16 × 28,403.64
  4. Step 4: Simplify right side
    87,562x = 3,731,163,502.26
  5. Step 5: Solve for x
    x = 3,731,163,502.26/87,562
  6. Step 6: Final answer
    x = 42,611.68

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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.