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Finding the Fourth Proportional to 65,257.44, 90,068.22 and 42,600.12

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Solution

The fourth proportional to 65,257.44, 90,068.22 and 42,600.12 is: 58,796.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,257.44 : 90,068.22 = 42,600.12 : x
  2. Step 2: Convert to fraction form
    65,257.44/90,068.22 = 42,600.12/x
  3. Step 3: Cross multiply
    65,257.44x = 90,068.22 × 42,600.12
  4. Step 4: Simplify right side
    65,257.44x = 3,836,916,980.19
  5. Step 5: Solve for x
    x = 3,836,916,980.19/65,257.44
  6. Step 6: Final answer
    x = 58,796.62

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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.