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Finding the Fourth Proportional to 74,353.92, 102,606.12 and 40,360.80

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Solution

The fourth proportional to 74,353.92, 102,606.12 and 40,360.80 is: 55,696.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,353.92 : 102,606.12 = 40,360.80 : x
  2. Step 2: Convert to fraction form
    74,353.92/102,606.12 = 40,360.80/x
  3. Step 3: Cross multiply
    74,353.92x = 102,606.12 × 40,360.80
  4. Step 4: Simplify right side
    74,353.92x = 4,141,265,088.10
  5. Step 5: Solve for x
    x = 4,141,265,088.10/74,353.92
  6. Step 6: Final answer
    x = 55,696.66

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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.