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Finding the Fourth Proportional to 85,636.58, 128,366.58 and 35,745.71

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Solution

The fourth proportional to 85,636.58, 128,366.58 and 35,745.71 is: 53,581.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,636.58 : 128,366.58 = 35,745.71 : x
  2. Step 2: Convert to fraction form
    85,636.58/128,366.58 = 35,745.71/x
  3. Step 3: Cross multiply
    85,636.58x = 128,366.58 × 35,745.71
  4. Step 4: Simplify right side
    85,636.58x = 4,588,554,542.37
  5. Step 5: Solve for x
    x = 4,588,554,542.37/85,636.58
  6. Step 6: Final answer
    x = 53,581.71

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1.5x scale

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.