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Finding the Fourth Proportional to 57,351.51, 86,039.24 and 28,904.45

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Solution

The fourth proportional to 57,351.51, 86,039.24 and 28,904.45 is: 43,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,351.51 : 86,039.24 = 28,904.45 : x
  2. Step 2: Convert to fraction form
    57,351.51/86,039.24 = 28,904.45/x
  3. Step 3: Cross multiply
    57,351.51x = 86,039.24 × 28,904.45
  4. Step 4: Simplify right side
    57,351.51x = 2,486,916,335.90
  5. Step 5: Solve for x
    x = 2,486,916,335.90/57,351.51
  6. Step 6: Final answer
    x = 43,362.70

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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.