Home / 85,986.55-129,029.03-33,389.20

Finding the Fourth Proportional to 85,986.55, 129,029.03 and 33,389.20

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Solution

The fourth proportional to 85,986.55, 129,029.03 and 33,389.20 is: 50,102.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,986.55 : 129,029.03 = 33,389.20 : x
  2. Step 2: Convert to fraction form
    85,986.55/129,029.03 = 33,389.20/x
  3. Step 3: Cross multiply
    85,986.55x = 129,029.03 × 33,389.20
  4. Step 4: Simplify right side
    85,986.55x = 4,308,176,088.48
  5. Step 5: Solve for x
    x = 4,308,176,088.48/85,986.55
  6. Step 6: Final answer
    x = 50,102.91

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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.