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Finding the Fourth Proportional to 85,602.58, 128,334.28 and 35,719.83

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Solution

The fourth proportional to 85,602.58, 128,334.28 and 35,719.83 is: 53,550.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602.58 : 128,334.28 = 35,719.83 : x
  2. Step 2: Convert to fraction form
    85,602.58/128,334.28 = 35,719.83/x
  3. Step 3: Cross multiply
    85,602.58x = 128,334.28 × 35,719.83
  4. Step 4: Simplify right side
    85,602.58x = 4,584,078,664.77
  5. Step 5: Solve for x
    x = 4,584,078,664.77/85,602.58
  6. Step 6: Final answer
    x = 53,550.71

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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.