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Finding the Fourth Proportional to 74,664, 103,036.32 and 41,130.72

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Solution

The fourth proportional to 74,664, 103,036.32 and 41,130.72 is: 56,760.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,664 : 103,036.32 = 41,130.72 : x
  2. Step 2: Convert to fraction form
    74,664/103,036.32 = 41,130.72/x
  3. Step 3: Cross multiply
    74,664x = 103,036.32 × 41,130.72
  4. Step 4: Simplify right side
    74,664x = 4,237,958,027.75
  5. Step 5: Solve for x
    x = 4,237,958,027.75/74,664
  6. Step 6: Final answer
    x = 56,760.39

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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.