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Finding the Fourth Proportional to 65,376.84, 98,065.32 and 45,693.84

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Solution

The fourth proportional to 65,376.84, 98,065.32 and 45,693.84 is: 68,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,376.84 : 98,065.32 = 45,693.84 : x
  2. Step 2: Convert to fraction form
    65,376.84/98,065.32 = 45,693.84/x
  3. Step 3: Cross multiply
    65,376.84x = 98,065.32 × 45,693.84
  4. Step 4: Simplify right side
    65,376.84x = 4,480,981,041.63
  5. Step 5: Solve for x
    x = 4,480,981,041.63/65,376.84
  6. Step 6: Final answer
    x = 68,540.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.