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Finding the Fourth Proportional to 74,459.66, 102,778.27 and 47,674.31

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Solution

The fourth proportional to 74,459.66, 102,778.27 and 47,674.31 is: 65,805.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,459.66 : 102,778.27 = 47,674.31 : x
  2. Step 2: Convert to fraction form
    74,459.66/102,778.27 = 47,674.31/x
  3. Step 3: Cross multiply
    74,459.66x = 102,778.27 × 47,674.31
  4. Step 4: Simplify right side
    74,459.66x = 4,899,882,472.17
  5. Step 5: Solve for x
    x = 4,899,882,472.17/74,459.66
  6. Step 6: Final answer
    x = 65,805.87

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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.