Home / 86,581.17-129,884.74-30,411.38

Finding the Fourth Proportional to 86,581.17, 129,884.74 and 30,411.38

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Solution

The fourth proportional to 86,581.17, 129,884.74 and 30,411.38 is: 45,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581.17 : 129,884.74 = 30,411.38 : x
  2. Step 2: Convert to fraction form
    86,581.17/129,884.74 = 30,411.38/x
  3. Step 3: Cross multiply
    86,581.17x = 129,884.74 × 30,411.38
  4. Step 4: Simplify right side
    86,581.17x = 3,949,973,945.96
  5. Step 5: Solve for x
    x = 3,949,973,945.96/86,581.17
  6. Step 6: Final answer
    x = 45,621.63

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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.