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Finding the Fourth Proportional to 74,349.82, 102,603 and 40,358.35

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Solution

The fourth proportional to 74,349.82, 102,603 and 40,358.35 is: 55,694.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,349.82 : 102,603 = 40,358.35 : x
  2. Step 2: Convert to fraction form
    74,349.82/102,603 = 40,358.35/x
  3. Step 3: Cross multiply
    74,349.82x = 102,603 × 40,358.35
  4. Step 4: Simplify right side
    74,349.82x = 4,140,887,785.05
  5. Step 5: Solve for x
    x = 4,140,887,785.05/74,349.82
  6. Step 6: Final answer
    x = 55,694.66

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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.