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Finding the Fourth Proportional to 140,552.57, 210,828.87 and 40,712.81

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Solution

The fourth proportional to 140,552.57, 210,828.87 and 40,712.81 is: 61,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,552.57 : 210,828.87 = 40,712.81 : x
  2. Step 2: Convert to fraction form
    140,552.57/210,828.87 = 40,712.81/x
  3. Step 3: Cross multiply
    140,552.57x = 210,828.87 × 40,712.81
  4. Step 4: Simplify right side
    140,552.57x = 8,583,434,672.68
  5. Step 5: Solve for x
    x = 8,583,434,672.68/140,552.57
  6. Step 6: Final answer
    x = 61,069.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.