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Finding the Fourth Proportional to 85,908.63, 128,832.03 and 29,733.48

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Solution

The fourth proportional to 85,908.63, 128,832.03 and 29,733.48 is: 44,589.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,908.63 : 128,832.03 = 29,733.48 : x
  2. Step 2: Convert to fraction form
    85,908.63/128,832.03 = 29,733.48/x
  3. Step 3: Cross multiply
    85,908.63x = 128,832.03 × 29,733.48
  4. Step 4: Simplify right side
    85,908.63x = 3,830,624,587.36
  5. Step 5: Solve for x
    x = 3,830,624,587.36/85,908.63
  6. Step 6: Final answer
    x = 44,589.52

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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.