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Finding the Fourth Proportional to 73,887.75, 101,965.64 and 40,353.75

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Solution

The fourth proportional to 73,887.75, 101,965.64 and 40,353.75 is: 55,688.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,887.75 : 101,965.64 = 40,353.75 : x
  2. Step 2: Convert to fraction form
    73,887.75/101,965.64 = 40,353.75/x
  3. Step 3: Cross multiply
    73,887.75x = 101,965.64 × 40,353.75
  4. Step 4: Simplify right side
    73,887.75x = 4,114,695,743.38
  5. Step 5: Solve for x
    x = 4,114,695,743.38/73,887.75
  6. Step 6: Final answer
    x = 55,688.47

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1.5x scale

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.