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Finding the Fourth Proportional to 65,171.64, 89,980.40 and 43,943.16

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Solution

The fourth proportional to 65,171.64, 89,980.40 and 43,943.16 is: 60,670.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,171.64 : 89,980.40 = 43,943.16 : x
  2. Step 2: Convert to fraction form
    65,171.64/89,980.40 = 43,943.16/x
  3. Step 3: Cross multiply
    65,171.64x = 89,980.40 × 43,943.16
  4. Step 4: Simplify right side
    65,171.64x = 3,954,023,114.06
  5. Step 5: Solve for x
    x = 3,954,023,114.06/65,171.64
  6. Step 6: Final answer
    x = 60,670.92

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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.