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Finding the Fourth Proportional to 89,872.40, 134,808.60 and 43,101.20

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Solution

The fourth proportional to 89,872.40, 134,808.60 and 43,101.20 is: 64,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,872.40 : 134,808.60 = 43,101.20 : x
  2. Step 2: Convert to fraction form
    89,872.40/134,808.60 = 43,101.20/x
  3. Step 3: Cross multiply
    89,872.40x = 134,808.60 × 43,101.20
  4. Step 4: Simplify right side
    89,872.40x = 5,810,412,430.32
  5. Step 5: Solve for x
    x = 5,810,412,430.32/89,872.40
  6. Step 6: Final answer
    x = 64,651.80

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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.