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Finding the Fourth Proportional to 61,147.64, 84,348 and 38,450.70

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Solution

The fourth proportional to 61,147.64, 84,348 and 38,450.70 is: 53,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,147.64 : 84,348 = 38,450.70 : x
  2. Step 2: Convert to fraction form
    61,147.64/84,348 = 38,450.70/x
  3. Step 3: Cross multiply
    61,147.64x = 84,348 × 38,450.70
  4. Step 4: Simplify right side
    61,147.64x = 3,243,239,643.60
  5. Step 5: Solve for x
    x = 3,243,239,643.60/61,147.64
  6. Step 6: Final answer
    x = 53,039.49

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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.