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Finding the Fourth Proportional to 88,869.30, 133,361.55 and 51,429.30

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Solution

The fourth proportional to 88,869.30, 133,361.55 and 51,429.30 is: 77,177.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,869.30 : 133,361.55 = 51,429.30 : x
  2. Step 2: Convert to fraction form
    88,869.30/133,361.55 = 51,429.30/x
  3. Step 3: Cross multiply
    88,869.30x = 133,361.55 × 51,429.30
  4. Step 4: Simplify right side
    88,869.30x = 6,858,691,163.42
  5. Step 5: Solve for x
    x = 6,858,691,163.42/88,869.30
  6. Step 6: Final answer
    x = 77,177.28

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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.