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Finding the Fourth Proportional to 88,612.80, 132,938.40 and 29,438.40

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Solution

The fourth proportional to 88,612.80, 132,938.40 and 29,438.40 is: 44,163.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,612.80 : 132,938.40 = 29,438.40 : x
  2. Step 2: Convert to fraction form
    88,612.80/132,938.40 = 29,438.40/x
  3. Step 3: Cross multiply
    88,612.80x = 132,938.40 × 29,438.40
  4. Step 4: Simplify right side
    88,612.80x = 3,913,493,794.56
  5. Step 5: Solve for x
    x = 3,913,493,794.56/88,612.80
  6. Step 6: Final answer
    x = 44,163.98

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1.5x scale

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.