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Finding the Fourth Proportional to 64,257.71, 88,665.10 and 40,367.47

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Solution

The fourth proportional to 64,257.71, 88,665.10 and 40,367.47 is: 55,700.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,257.71 : 88,665.10 = 40,367.47 : x
  2. Step 2: Convert to fraction form
    64,257.71/88,665.10 = 40,367.47/x
  3. Step 3: Cross multiply
    64,257.71x = 88,665.10 × 40,367.47
  4. Step 4: Simplify right side
    64,257.71x = 3,579,185,562.46
  5. Step 5: Solve for x
    x = 3,579,185,562.46/64,257.71
  6. Step 6: Final answer
    x = 55,700.48

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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.