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Finding the Fourth Proportional to 79,230, 118,763.10 and 26,621.76

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Solution

The fourth proportional to 79,230, 118,763.10 and 26,621.76 is: 39,905.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,230 : 118,763.10 = 26,621.76 : x
  2. Step 2: Convert to fraction form
    79,230/118,763.10 = 26,621.76/x
  3. Step 3: Cross multiply
    79,230x = 118,763.10 × 26,621.76
  4. Step 4: Simplify right side
    79,230x = 3,161,682,745.06
  5. Step 5: Solve for x
    x = 3,161,682,745.06/79,230
  6. Step 6: Final answer
    x = 39,905.12

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1.5x scale

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.