Home / 87,783.45-121,140.30-47,496.33

Finding the Fourth Proportional to 87,783.45, 121,140.30 and 47,496.33

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Solution

The fourth proportional to 87,783.45, 121,140.30 and 47,496.33 is: 65,544.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,783.45 : 121,140.30 = 47,496.33 : x
  2. Step 2: Convert to fraction form
    87,783.45/121,140.30 = 47,496.33/x
  3. Step 3: Cross multiply
    87,783.45x = 121,140.30 × 47,496.33
  4. Step 4: Simplify right side
    87,783.45x = 5,753,719,665.10
  5. Step 5: Solve for x
    x = 5,753,719,665.10/87,783.45
  6. Step 6: Final answer
    x = 65,544.47

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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.