Home / 88,143.93-121,636.49-50,415.75

Finding the Fourth Proportional to 88,143.93, 121,636.49 and 50,415.75

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Solution

The fourth proportional to 88,143.93, 121,636.49 and 50,415.75 is: 69,572.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.93 : 121,636.49 = 50,415.75 : x
  2. Step 2: Convert to fraction form
    88,143.93/121,636.49 = 50,415.75/x
  3. Step 3: Cross multiply
    88,143.93x = 121,636.49 × 50,415.75
  4. Step 4: Simplify right side
    88,143.93x = 6,132,394,618.64
  5. Step 5: Solve for x
    x = 6,132,394,618.64/88,143.93
  6. Step 6: Final answer
    x = 69,572.51

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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.