Home / 81,979.35-122,967.41-26,575.35

Finding the Fourth Proportional to 81,979.35, 122,967.41 and 26,575.35

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Solution

The fourth proportional to 81,979.35, 122,967.41 and 26,575.35 is: 39,862.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,979.35 : 122,967.41 = 26,575.35 : x
  2. Step 2: Convert to fraction form
    81,979.35/122,967.41 = 26,575.35/x
  3. Step 3: Cross multiply
    81,979.35x = 122,967.41 × 26,575.35
  4. Step 4: Simplify right side
    81,979.35x = 3,267,901,826.47
  5. Step 5: Solve for x
    x = 3,267,901,826.47/81,979.35
  6. Step 6: Final answer
    x = 39,862.50

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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.