Home / 105,542.82-145,641.51-57,788.46

Finding the Fourth Proportional to 105,542.82, 145,641.51 and 57,788.46

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Solution

The fourth proportional to 105,542.82, 145,641.51 and 57,788.46 is: 79,743.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,542.82 : 145,641.51 = 57,788.46 : x
  2. Step 2: Convert to fraction form
    105,542.82/145,641.51 = 57,788.46/x
  3. Step 3: Cross multiply
    105,542.82x = 145,641.51 × 57,788.46
  4. Step 4: Simplify right side
    105,542.82x = 8,416,398,574.97
  5. Step 5: Solve for x
    x = 8,416,398,574.97/105,542.82
  6. Step 6: Final answer
    x = 79,743.92

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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.