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Finding the Fourth Proportional to 85,900.88, 128,719.82 and 35,953.79

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Solution

The fourth proportional to 85,900.88, 128,719.82 and 35,953.79 is: 53,875.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,900.88 : 128,719.82 = 35,953.79 : x
  2. Step 2: Convert to fraction form
    85,900.88/128,719.82 = 35,953.79/x
  3. Step 3: Cross multiply
    85,900.88x = 128,719.82 × 35,953.79
  4. Step 4: Simplify right side
    85,900.88x = 4,627,965,197.35
  5. Step 5: Solve for x
    x = 4,627,965,197.35/85,900.88
  6. Step 6: Final answer
    x = 53,875.64

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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.