Home / 86,576.18-129,871.70-30,411.41

Finding the Fourth Proportional to 86,576.18, 129,871.70 and 30,411.41

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Solution

The fourth proportional to 86,576.18, 129,871.70 and 30,411.41 is: 45,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,576.18 : 129,871.70 = 30,411.41 : x
  2. Step 2: Convert to fraction form
    86,576.18/129,871.70 = 30,411.41/x
  3. Step 3: Cross multiply
    86,576.18x = 129,871.70 × 30,411.41
  4. Step 4: Simplify right side
    86,576.18x = 3,949,581,516.10
  5. Step 5: Solve for x
    x = 3,949,581,516.10/86,576.18
  6. Step 6: Final answer
    x = 45,619.72

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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.