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Finding the Fourth Proportional to 65,990.13, 91,068.53 and 37,310.64

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Solution

The fourth proportional to 65,990.13, 91,068.53 and 37,310.64 is: 51,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,990.13 : 91,068.53 = 37,310.64 : x
  2. Step 2: Convert to fraction form
    65,990.13/91,068.53 = 37,310.64/x
  3. Step 3: Cross multiply
    65,990.13x = 91,068.53 × 37,310.64
  4. Step 4: Simplify right side
    65,990.13x = 3,397,824,951.61
  5. Step 5: Solve for x
    x = 3,397,824,951.61/65,990.13
  6. Step 6: Final answer
    x = 51,489.90

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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.