Home / 86,581.48-129,885.21-30,411.69

Finding the Fourth Proportional to 86,581.48, 129,885.21 and 30,411.69

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Solution

The fourth proportional to 86,581.48, 129,885.21 and 30,411.69 is: 45,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581.48 : 129,885.21 = 30,411.69 : x
  2. Step 2: Convert to fraction form
    86,581.48/129,885.21 = 30,411.69/x
  3. Step 3: Cross multiply
    86,581.48x = 129,885.21 × 30,411.69
  4. Step 4: Simplify right side
    86,581.48x = 3,950,028,742.10
  5. Step 5: Solve for x
    x = 3,950,028,742.10/86,581.48
  6. Step 6: Final answer
    x = 45,622.10

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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.