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Finding the Fourth Proportional to 85,754.52, 118,341.60 and 49,969.08

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Solution

The fourth proportional to 85,754.52, 118,341.60 and 49,969.08 is: 68,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,754.52 : 118,341.60 = 49,969.08 : x
  2. Step 2: Convert to fraction form
    85,754.52/118,341.60 = 49,969.08/x
  3. Step 3: Cross multiply
    85,754.52x = 118,341.60 × 49,969.08
  4. Step 4: Simplify right side
    85,754.52x = 5,913,420,877.73
  5. Step 5: Solve for x
    x = 5,913,420,877.73/85,754.52
  6. Step 6: Final answer
    x = 68,957.54

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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.