Home / 81,417.40-122,121.78-26,009.08

Finding the Fourth Proportional to 81,417.40, 122,121.78 and 26,009.08

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Solution

The fourth proportional to 81,417.40, 122,121.78 and 26,009.08 is: 39,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,417.40 : 122,121.78 = 26,009.08 : x
  2. Step 2: Convert to fraction form
    81,417.40/122,121.78 = 26,009.08/x
  3. Step 3: Cross multiply
    81,417.40x = 122,121.78 × 26,009.08
  4. Step 4: Simplify right side
    81,417.40x = 3,176,275,145.76
  5. Step 5: Solve for x
    x = 3,176,275,145.76/81,417.40
  6. Step 6: Final answer
    x = 39,012.24

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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.