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Finding the Fourth Proportional to 79,768.10, 119,623.80 and 35,315.30

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Solution

The fourth proportional to 79,768.10, 119,623.80 and 35,315.30 is: 52,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,768.10 : 119,623.80 = 35,315.30 : x
  2. Step 2: Convert to fraction form
    79,768.10/119,623.80 = 35,315.30/x
  3. Step 3: Cross multiply
    79,768.10x = 119,623.80 × 35,315.30
  4. Step 4: Simplify right side
    79,768.10x = 4,224,550,384.14
  5. Step 5: Solve for x
    x = 4,224,550,384.14/79,768.10
  6. Step 6: Final answer
    x = 52,960.40

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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.