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Finding the Fourth Proportional to 85,173.28, 127,767.81 and 28,994.51

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Solution

The fourth proportional to 85,173.28, 127,767.81 and 28,994.51 is: 43,494.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,173.28 : 127,767.81 = 28,994.51 : x
  2. Step 2: Convert to fraction form
    85,173.28/127,767.81 = 28,994.51/x
  3. Step 3: Cross multiply
    85,173.28x = 127,767.81 × 28,994.51
  4. Step 4: Simplify right side
    85,173.28x = 3,704,565,044.72
  5. Step 5: Solve for x
    x = 3,704,565,044.72/85,173.28
  6. Step 6: Final answer
    x = 43,494.45

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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.