Home / 105,481.76-145,561.26-57,734.12

Finding the Fourth Proportional to 105,481.76, 145,561.26 and 57,734.12

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Solution

The fourth proportional to 105,481.76, 145,561.26 and 57,734.12 is: 79,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,481.76 : 145,561.26 = 57,734.12 : x
  2. Step 2: Convert to fraction form
    105,481.76/145,561.26 = 57,734.12/x
  3. Step 3: Cross multiply
    105,481.76x = 145,561.26 × 57,734.12
  4. Step 4: Simplify right side
    105,481.76x = 8,403,851,252.19
  5. Step 5: Solve for x
    x = 8,403,851,252.19/105,481.76
  6. Step 6: Final answer
    x = 79,671.13

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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.