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Finding the Fourth Proportional to 65,087.62, 89,821.05 and 35,279.62

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Solution

The fourth proportional to 65,087.62, 89,821.05 and 35,279.62 is: 48,685.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,087.62 : 89,821.05 = 35,279.62 : x
  2. Step 2: Convert to fraction form
    65,087.62/89,821.05 = 35,279.62/x
  3. Step 3: Cross multiply
    65,087.62x = 89,821.05 × 35,279.62
  4. Step 4: Simplify right side
    65,087.62x = 3,168,852,512.00
  5. Step 5: Solve for x
    x = 3,168,852,512.00/65,087.62
  6. Step 6: Final answer
    x = 48,685.95

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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.