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Finding the Fourth Proportional to 88,832.40, 132,989.40 and 79,501.20

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Solution

The fourth proportional to 88,832.40, 132,989.40 and 79,501.20 is: 119,019.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,832.40 : 132,989.40 = 79,501.20 : x
  2. Step 2: Convert to fraction form
    88,832.40/132,989.40 = 79,501.20/x
  3. Step 3: Cross multiply
    88,832.40x = 132,989.40 × 79,501.20
  4. Step 4: Simplify right side
    88,832.40x = 10,572,816,887.28
  5. Step 5: Solve for x
    x = 10,572,816,887.28/88,832.40
  6. Step 6: Final answer
    x = 119,019.83

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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.