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Finding the Fourth Proportional to 71,101.90, 98,112.23 and 39,268.90

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Solution

The fourth proportional to 71,101.90, 98,112.23 and 39,268.90 is: 54,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,101.90 : 98,112.23 = 39,268.90 : x
  2. Step 2: Convert to fraction form
    71,101.90/98,112.23 = 39,268.90/x
  3. Step 3: Cross multiply
    71,101.90x = 98,112.23 × 39,268.90
  4. Step 4: Simplify right side
    71,101.90x = 3,852,759,348.65
  5. Step 5: Solve for x
    x = 3,852,759,348.65/71,101.90
  6. Step 6: Final answer
    x = 54,186.45

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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.