Home / 88,145.28-121,641.75-47,859.12

Finding the Fourth Proportional to 88,145.28, 121,641.75 and 47,859.12

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Solution

The fourth proportional to 88,145.28, 121,641.75 and 47,859.12 is: 66,046.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,145.28 : 121,641.75 = 47,859.12 : x
  2. Step 2: Convert to fraction form
    88,145.28/121,641.75 = 47,859.12/x
  3. Step 3: Cross multiply
    88,145.28x = 121,641.75 × 47,859.12
  4. Step 4: Simplify right side
    88,145.28x = 5,821,667,110.26
  5. Step 5: Solve for x
    x = 5,821,667,110.26/88,145.28
  6. Step 6: Final answer
    x = 66,046.27

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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.