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Finding the Fourth Proportional to 74,365.25, 102,586 and 47,479.49

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Solution

The fourth proportional to 74,365.25, 102,586 and 47,479.49 is: 65,497.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,365.25 : 102,586 = 47,479.49 : x
  2. Step 2: Convert to fraction form
    74,365.25/102,586 = 47,479.49/x
  3. Step 3: Cross multiply
    74,365.25x = 102,586 × 47,479.49
  4. Step 4: Simplify right side
    74,365.25x = 4,870,730,961.14
  5. Step 5: Solve for x
    x = 4,870,730,961.14/74,365.25
  6. Step 6: Final answer
    x = 65,497.41

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1.5x scale

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.