Home / 88,107.28-121,589-47,821.40

Finding the Fourth Proportional to 88,107.28, 121,589 and 47,821.40

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Solution

The fourth proportional to 88,107.28, 121,589 and 47,821.40 is: 65,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,107.28 : 121,589 = 47,821.40 : x
  2. Step 2: Convert to fraction form
    88,107.28/121,589 = 47,821.40/x
  3. Step 3: Cross multiply
    88,107.28x = 121,589 × 47,821.40
  4. Step 4: Simplify right side
    88,107.28x = 5,814,556,204.60
  5. Step 5: Solve for x
    x = 5,814,556,204.60/88,107.28
  6. Step 6: Final answer
    x = 65,994.05

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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.