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Finding the Fourth Proportional to 65,133.70, 97,685.62 and 31,382.48

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Solution

The fourth proportional to 65,133.70, 97,685.62 and 31,382.48 is: 47,066.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,133.70 : 97,685.62 = 31,382.48 : x
  2. Step 2: Convert to fraction form
    65,133.70/97,685.62 = 31,382.48/x
  3. Step 3: Cross multiply
    65,133.70x = 97,685.62 × 31,382.48
  4. Step 4: Simplify right side
    65,133.70x = 3,065,617,015.94
  5. Step 5: Solve for x
    x = 3,065,617,015.94/65,133.70
  6. Step 6: Final answer
    x = 47,066.53

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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.