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Finding the Fourth Proportional to 88,358.40, 132,318.90 and 56,719.80

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Solution

The fourth proportional to 88,358.40, 132,318.90 and 56,719.80 is: 84,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,358.40 : 132,318.90 = 56,719.80 : x
  2. Step 2: Convert to fraction form
    88,358.40/132,318.90 = 56,719.80/x
  3. Step 3: Cross multiply
    88,358.40x = 132,318.90 × 56,719.80
  4. Step 4: Simplify right side
    88,358.40x = 7,505,101,544.22
  5. Step 5: Solve for x
    x = 7,505,101,544.22/88,358.40
  6. Step 6: Final answer
    x = 84,939.31

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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.