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Finding the Fourth Proportional to 64,426.88, 88,918.81 and 39,290.96

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Solution

The fourth proportional to 64,426.88, 88,918.81 and 39,290.96 is: 54,227.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,426.88 : 88,918.81 = 39,290.96 : x
  2. Step 2: Convert to fraction form
    64,426.88/88,918.81 = 39,290.96/x
  3. Step 3: Cross multiply
    64,426.88x = 88,918.81 × 39,290.96
  4. Step 4: Simplify right side
    64,426.88x = 3,493,704,864.14
  5. Step 5: Solve for x
    x = 3,493,704,864.14/64,426.88
  6. Step 6: Final answer
    x = 54,227.45

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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.