Home / 81,436.32-122,148.70-25,275.08

Finding the Fourth Proportional to 81,436.32, 122,148.70 and 25,275.08

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Solution

The fourth proportional to 81,436.32, 122,148.70 and 25,275.08 is: 37,910.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,436.32 : 122,148.70 = 25,275.08 : x
  2. Step 2: Convert to fraction form
    81,436.32/122,148.70 = 25,275.08/x
  3. Step 3: Cross multiply
    81,436.32x = 122,148.70 × 25,275.08
  4. Step 4: Simplify right side
    81,436.32x = 3,087,318,406.58
  5. Step 5: Solve for x
    x = 3,087,318,406.58/81,436.32
  6. Step 6: Final answer
    x = 37,910.83

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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.