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Finding the Fourth Proportional to 69,087.60, 103,092.60 and 61,640.88

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Solution

The fourth proportional to 69,087.60, 103,092.60 and 61,640.88 is: 91,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,087.60 : 103,092.60 = 61,640.88 : x
  2. Step 2: Convert to fraction form
    69,087.60/103,092.60 = 61,640.88/x
  3. Step 3: Cross multiply
    69,087.60x = 103,092.60 × 61,640.88
  4. Step 4: Simplify right side
    69,087.60x = 6,354,718,585.49
  5. Step 5: Solve for x
    x = 6,354,718,585.49/69,087.60
  6. Step 6: Final answer
    x = 91,980.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.