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Finding the Fourth Proportional to 85,669.88, 128,549.77 and 35,106.44

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Solution

The fourth proportional to 85,669.88, 128,549.77 and 35,106.44 is: 52,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.88 : 128,549.77 = 35,106.44 : x
  2. Step 2: Convert to fraction form
    85,669.88/128,549.77 = 35,106.44/x
  3. Step 3: Cross multiply
    85,669.88x = 128,549.77 × 35,106.44
  4. Step 4: Simplify right side
    85,669.88x = 4,512,924,057.00
  5. Step 5: Solve for x
    x = 4,512,924,057.00/85,669.88
  6. Step 6: Final answer
    x = 52,678.07

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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.