Home / 86,009.17-129,021.90-33,422.71

Finding the Fourth Proportional to 86,009.17, 129,021.90 and 33,422.71

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Solution

The fourth proportional to 86,009.17, 129,021.90 and 33,422.71 is: 50,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,009.17 : 129,021.90 = 33,422.71 : x
  2. Step 2: Convert to fraction form
    86,009.17/129,021.90 = 33,422.71/x
  3. Step 3: Cross multiply
    86,009.17x = 129,021.90 × 33,422.71
  4. Step 4: Simplify right side
    86,009.17x = 4,312,261,547.35
  5. Step 5: Solve for x
    x = 4,312,261,547.35/86,009.17
  6. Step 6: Final answer
    x = 50,137.23

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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.