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Finding the Fourth Proportional to 79,795.80, 119,664.90 and 40,339.80

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Solution

The fourth proportional to 79,795.80, 119,664.90 and 40,339.80 is: 60,495.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,795.80 : 119,664.90 = 40,339.80 : x
  2. Step 2: Convert to fraction form
    79,795.80/119,664.90 = 40,339.80/x
  3. Step 3: Cross multiply
    79,795.80x = 119,664.90 × 40,339.80
  4. Step 4: Simplify right side
    79,795.80x = 4,827,258,133.02
  5. Step 5: Solve for x
    x = 4,827,258,133.02/79,795.80
  6. Step 6: Final answer
    x = 60,495.14

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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.