Home / 81,650.76-112,674.40-45,840.12

Finding the Fourth Proportional to 81,650.76, 112,674.40 and 45,840.12

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Solution

The fourth proportional to 81,650.76, 112,674.40 and 45,840.12 is: 63,257.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,650.76 : 112,674.40 = 45,840.12 : x
  2. Step 2: Convert to fraction form
    81,650.76/112,674.40 = 45,840.12/x
  3. Step 3: Cross multiply
    81,650.76x = 112,674.40 × 45,840.12
  4. Step 4: Simplify right side
    81,650.76x = 5,165,008,016.93
  5. Step 5: Solve for x
    x = 5,165,008,016.93/81,650.76
  6. Step 6: Final answer
    x = 63,257.32

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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.