Home / 81,250.15-121,862.86-31,322.96

Finding the Fourth Proportional to 81,250.15, 121,862.86 and 31,322.96

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Solution

The fourth proportional to 81,250.15, 121,862.86 and 31,322.96 is: 46,979.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,250.15 : 121,862.86 = 31,322.96 : x
  2. Step 2: Convert to fraction form
    81,250.15/121,862.86 = 31,322.96/x
  3. Step 3: Cross multiply
    81,250.15x = 121,862.86 × 31,322.96
  4. Step 4: Simplify right side
    81,250.15x = 3,817,105,489.27
  5. Step 5: Solve for x
    x = 3,817,105,489.27/81,250.15
  6. Step 6: Final answer
    x = 46,979.67

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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.