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Finding the Fourth Proportional to 74,404.36, 102,677.70 and 40,869.64

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Solution

The fourth proportional to 74,404.36, 102,677.70 and 40,869.64 is: 56,399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,404.36 : 102,677.70 = 40,869.64 : x
  2. Step 2: Convert to fraction form
    74,404.36/102,677.70 = 40,869.64/x
  3. Step 3: Cross multiply
    74,404.36x = 102,677.70 × 40,869.64
  4. Step 4: Simplify right side
    74,404.36x = 4,196,400,635.03
  5. Step 5: Solve for x
    x = 4,196,400,635.03/74,404.36
  6. Step 6: Final answer
    x = 56,399.93

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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.