Home / 81,630.08-122,433.60-26,218.88

Finding the Fourth Proportional to 81,630.08, 122,433.60 and 26,218.88

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Solution

The fourth proportional to 81,630.08, 122,433.60 and 26,218.88 is: 39,324.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,630.08 : 122,433.60 = 26,218.88 : x
  2. Step 2: Convert to fraction form
    81,630.08/122,433.60 = 26,218.88/x
  3. Step 3: Cross multiply
    81,630.08x = 122,433.60 × 26,218.88
  4. Step 4: Simplify right side
    81,630.08x = 3,210,071,866.37
  5. Step 5: Solve for x
    x = 3,210,071,866.37/81,630.08
  6. Step 6: Final answer
    x = 39,324.62

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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.