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Finding the Fourth Proportional to 71,644.92, 98,873.34 and 39,814.08

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Solution

The fourth proportional to 71,644.92, 98,873.34 and 39,814.08 is: 54,945.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,644.92 : 98,873.34 = 39,814.08 : x
  2. Step 2: Convert to fraction form
    71,644.92/98,873.34 = 39,814.08/x
  3. Step 3: Cross multiply
    71,644.92x = 98,873.34 × 39,814.08
  4. Step 4: Simplify right side
    71,644.92x = 3,936,551,068.63
  5. Step 5: Solve for x
    x = 3,936,551,068.63/71,644.92
  6. Step 6: Final answer
    x = 54,945.29

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1.5x scale

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.