Home / 90,886.82-125,388.96-56,415.38

Finding the Fourth Proportional to 90,886.82, 125,388.96 and 56,415.38

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Solution

The fourth proportional to 90,886.82, 125,388.96 and 56,415.38 is: 77,831.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,886.82 : 125,388.96 = 56,415.38 : x
  2. Step 2: Convert to fraction form
    90,886.82/125,388.96 = 56,415.38/x
  3. Step 3: Cross multiply
    90,886.82x = 125,388.96 × 56,415.38
  4. Step 4: Simplify right side
    90,886.82x = 7,073,865,826.20
  5. Step 5: Solve for x
    x = 7,073,865,826.20/90,886.82
  6. Step 6: Final answer
    x = 77,831.59

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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.