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Finding the Fourth Proportional to 79,083.40, 109,134.08 and 45,090.80

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Solution

The fourth proportional to 79,083.40, 109,134.08 and 45,090.80 is: 62,224.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,083.40 : 109,134.08 = 45,090.80 : x
  2. Step 2: Convert to fraction form
    79,083.40/109,134.08 = 45,090.80/x
  3. Step 3: Cross multiply
    79,083.40x = 109,134.08 × 45,090.80
  4. Step 4: Simplify right side
    79,083.40x = 4,920,942,974.46
  5. Step 5: Solve for x
    x = 4,920,942,974.46/79,083.40
  6. Step 6: Final answer
    x = 62,224.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.