Home / 88,143.11-121,636.77-47,856.06

Finding the Fourth Proportional to 88,143.11, 121,636.77 and 47,856.06

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Solution

The fourth proportional to 88,143.11, 121,636.77 and 47,856.06 is: 66,040.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.11 : 121,636.77 = 47,856.06 : x
  2. Step 2: Convert to fraction form
    88,143.11/121,636.77 = 47,856.06/x
  3. Step 3: Cross multiply
    88,143.11x = 121,636.77 × 47,856.06
  4. Step 4: Simplify right side
    88,143.11x = 5,821,056,563.33
  5. Step 5: Solve for x
    x = 5,821,056,563.33/88,143.11
  6. Step 6: Final answer
    x = 66,040.97

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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.