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Finding the Fourth Proportional to 73,416.40, 101,309.64 and 39,881.68

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Solution

The fourth proportional to 73,416.40, 101,309.64 and 39,881.68 is: 55,034.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,416.40 : 101,309.64 = 39,881.68 : x
  2. Step 2: Convert to fraction form
    73,416.40/101,309.64 = 39,881.68/x
  3. Step 3: Cross multiply
    73,416.40x = 101,309.64 × 39,881.68
  4. Step 4: Simplify right side
    73,416.40x = 4,040,398,643.40
  5. Step 5: Solve for x
    x = 4,040,398,643.40/73,416.40
  6. Step 6: Final answer
    x = 55,034.01

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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.