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Finding the Fourth Proportional to 65,172.61, 89,930.31 and 36,490.03

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Solution

The fourth proportional to 65,172.61, 89,930.31 and 36,490.03 is: 50,351.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,172.61 : 89,930.31 = 36,490.03 : x
  2. Step 2: Convert to fraction form
    65,172.61/89,930.31 = 36,490.03/x
  3. Step 3: Cross multiply
    65,172.61x = 89,930.31 × 36,490.03
  4. Step 4: Simplify right side
    65,172.61x = 3,281,559,348.15
  5. Step 5: Solve for x
    x = 3,281,559,348.15/65,172.61
  6. Step 6: Final answer
    x = 50,351.82

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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.