Home / 86,462.40-129,679.02-33,128.76

Finding the Fourth Proportional to 86,462.40, 129,679.02 and 33,128.76

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Solution

The fourth proportional to 86,462.40, 129,679.02 and 33,128.76 is: 49,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,462.40 : 129,679.02 = 33,128.76 : x
  2. Step 2: Convert to fraction form
    86,462.40/129,679.02 = 33,128.76/x
  3. Step 3: Cross multiply
    86,462.40x = 129,679.02 × 33,128.76
  4. Step 4: Simplify right side
    86,462.40x = 4,296,105,130.62
  5. Step 5: Solve for x
    x = 4,296,105,130.62/86,462.40
  6. Step 6: Final answer
    x = 49,687.55

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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.