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Finding the Fourth Proportional to 85,640.67, 118,155.51 and 49,823.10

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Solution

The fourth proportional to 85,640.67, 118,155.51 and 49,823.10 is: 68,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,640.67 : 118,155.51 = 49,823.10 : x
  2. Step 2: Convert to fraction form
    85,640.67/118,155.51 = 49,823.10/x
  3. Step 3: Cross multiply
    85,640.67x = 118,155.51 × 49,823.10
  4. Step 4: Simplify right side
    85,640.67x = 5,886,873,790.28
  5. Step 5: Solve for x
    x = 5,886,873,790.28/85,640.67
  6. Step 6: Final answer
    x = 68,739.23

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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.