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Finding the Fourth Proportional to 71,918.28, 107,328.24 and 64,045.08

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Solution

The fourth proportional to 71,918.28, 107,328.24 and 64,045.08 is: 95,578.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,918.28 : 107,328.24 = 64,045.08 : x
  2. Step 2: Convert to fraction form
    71,918.28/107,328.24 = 64,045.08/x
  3. Step 3: Cross multiply
    71,918.28x = 107,328.24 × 64,045.08
  4. Step 4: Simplify right side
    71,918.28x = 6,873,845,717.06
  5. Step 5: Solve for x
    x = 6,873,845,717.06/71,918.28
  6. Step 6: Final answer
    x = 95,578.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.