Home / 81,047.40-121,544.80-26,997.72

Finding the Fourth Proportional to 81,047.40, 121,544.80 and 26,997.72

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Solution

The fourth proportional to 81,047.40, 121,544.80 and 26,997.72 is: 40,487.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,047.40 : 121,544.80 = 26,997.72 : x
  2. Step 2: Convert to fraction form
    81,047.40/121,544.80 = 26,997.72/x
  3. Step 3: Cross multiply
    81,047.40x = 121,544.80 × 26,997.72
  4. Step 4: Simplify right side
    81,047.40x = 3,281,432,477.86
  5. Step 5: Solve for x
    x = 3,281,432,477.86/81,047.40
  6. Step 6: Final answer
    x = 40,487.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.