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Finding the Fourth Proportional to 75,170.80, 103,685.76 and 48,347.26

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Solution

The fourth proportional to 75,170.80, 103,685.76 and 48,347.26 is: 66,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,170.80 : 103,685.76 = 48,347.26 : x
  2. Step 2: Convert to fraction form
    75,170.80/103,685.76 = 48,347.26/x
  3. Step 3: Cross multiply
    75,170.80x = 103,685.76 × 48,347.26
  4. Step 4: Simplify right side
    75,170.80x = 5,012,922,397.02
  5. Step 5: Solve for x
    x = 5,012,922,397.02/75,170.80
  6. Step 6: Final answer
    x = 66,687.10

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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.