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Finding the Fourth Proportional to 75,415.68, 104,061.15 and 43,587.54

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Solution

The fourth proportional to 75,415.68, 104,061.15 and 43,587.54 is: 60,143.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,415.68 : 104,061.15 = 43,587.54 : x
  2. Step 2: Convert to fraction form
    75,415.68/104,061.15 = 43,587.54/x
  3. Step 3: Cross multiply
    75,415.68x = 104,061.15 × 43,587.54
  4. Step 4: Simplify right side
    75,415.68x = 4,535,769,538.07
  5. Step 5: Solve for x
    x = 4,535,769,538.07/75,415.68
  6. Step 6: Final answer
    x = 60,143.59

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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.