Home / 90,712.64-125,191.32-50,434.28

Finding the Fourth Proportional to 90,712.64, 125,191.32 and 50,434.28

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Solution

The fourth proportional to 90,712.64, 125,191.32 and 50,434.28 is: 69,603.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,712.64 : 125,191.32 = 50,434.28 : x
  2. Step 2: Convert to fraction form
    90,712.64/125,191.32 = 50,434.28/x
  3. Step 3: Cross multiply
    90,712.64x = 125,191.32 × 50,434.28
  4. Step 4: Simplify right side
    90,712.64x = 6,313,934,086.45
  5. Step 5: Solve for x
    x = 6,313,934,086.45/90,712.64
  6. Step 6: Final answer
    x = 69,603.69

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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.