Home / 86,114.96-129,128.18-38,689.41

Finding the Fourth Proportional to 86,114.96, 129,128.18 and 38,689.41

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Solution

The fourth proportional to 86,114.96, 129,128.18 and 38,689.41 is: 58,014.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,114.96 : 129,128.18 = 38,689.41 : x
  2. Step 2: Convert to fraction form
    86,114.96/129,128.18 = 38,689.41/x
  3. Step 3: Cross multiply
    86,114.96x = 129,128.18 × 38,689.41
  4. Step 4: Simplify right side
    86,114.96x = 4,995,893,389.36
  5. Step 5: Solve for x
    x = 4,995,893,389.36/86,114.96
  6. Step 6: Final answer
    x = 58,014.23

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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.