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Finding the Fourth Proportional to 72,855.45, 109,254.38 and 35,404.43

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Solution

The fourth proportional to 72,855.45, 109,254.38 and 35,404.43 is: 53,092.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,855.45 : 109,254.38 = 35,404.43 : x
  2. Step 2: Convert to fraction form
    72,855.45/109,254.38 = 35,404.43/x
  3. Step 3: Cross multiply
    72,855.45x = 109,254.38 × 35,404.43
  4. Step 4: Simplify right side
    72,855.45x = 3,868,088,325.61
  5. Step 5: Solve for x
    x = 3,868,088,325.61/72,855.45
  6. Step 6: Final answer
    x = 53,092.64

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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.