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Finding the Fourth Proportional to 75,707.91, 104,486.09 and 43,878.15

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Solution

The fourth proportional to 75,707.91, 104,486.09 and 43,878.15 is: 60,557.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,707.91 : 104,486.09 = 43,878.15 : x
  2. Step 2: Convert to fraction form
    75,707.91/104,486.09 = 43,878.15/x
  3. Step 3: Cross multiply
    75,707.91x = 104,486.09 × 43,878.15
  4. Step 4: Simplify right side
    75,707.91x = 4,584,656,110.54
  5. Step 5: Solve for x
    x = 4,584,656,110.54/75,707.91
  6. Step 6: Final answer
    x = 60,557.16

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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.