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Finding the Fourth Proportional to 61,160.08, 84,388.08 and 39,970.48

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Solution

The fourth proportional to 61,160.08, 84,388.08 and 39,970.48 is: 55,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,160.08 : 84,388.08 = 39,970.48 : x
  2. Step 2: Convert to fraction form
    61,160.08/84,388.08 = 39,970.48/x
  3. Step 3: Cross multiply
    61,160.08x = 84,388.08 × 39,970.48
  4. Step 4: Simplify right side
    61,160.08x = 3,373,032,063.88
  5. Step 5: Solve for x
    x = 3,373,032,063.88/61,160.08
  6. Step 6: Final answer
    x = 55,150.88

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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.