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Finding the Fourth Proportional to 79,486.80, 119,230.20 and 58,491.60

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Solution

The fourth proportional to 79,486.80, 119,230.20 and 58,491.60 is: 87,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,486.80 : 119,230.20 = 58,491.60 : x
  2. Step 2: Convert to fraction form
    79,486.80/119,230.20 = 58,491.60/x
  3. Step 3: Cross multiply
    79,486.80x = 119,230.20 × 58,491.60
  4. Step 4: Simplify right side
    79,486.80x = 6,973,965,166.32
  5. Step 5: Solve for x
    x = 6,973,965,166.32/79,486.80
  6. Step 6: Final answer
    x = 87,737.40

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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.