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Finding the Fourth Proportional to 75,291.68, 103,921.43 and 51,133.53

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Solution

The fourth proportional to 75,291.68, 103,921.43 and 51,133.53 is: 70,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,291.68 : 103,921.43 = 51,133.53 : x
  2. Step 2: Convert to fraction form
    75,291.68/103,921.43 = 51,133.53/x
  3. Step 3: Cross multiply
    75,291.68x = 103,921.43 × 51,133.53
  4. Step 4: Simplify right side
    75,291.68x = 5,313,869,302.88
  5. Step 5: Solve for x
    x = 5,313,869,302.88/75,291.68
  6. Step 6: Final answer
    x = 70,577.11

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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.