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Finding the Fourth Proportional to 85,668.96, 118,232 and 49,371.68

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Solution

The fourth proportional to 85,668.96, 118,232 and 49,371.68 is: 68,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,668.96 : 118,232 = 49,371.68 : x
  2. Step 2: Convert to fraction form
    85,668.96/118,232 = 49,371.68/x
  3. Step 3: Cross multiply
    85,668.96x = 118,232 × 49,371.68
  4. Step 4: Simplify right side
    85,668.96x = 5,837,312,469.76
  5. Step 5: Solve for x
    x = 5,837,312,469.76/85,668.96
  6. Step 6: Final answer
    x = 68,138.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.