Home / 86,562.17-129,900-30,400.82

Finding the Fourth Proportional to 86,562.17, 129,900 and 30,400.82

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Solution

The fourth proportional to 86,562.17, 129,900 and 30,400.82 is: 45,621.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,562.17 : 129,900 = 30,400.82 : x
  2. Step 2: Convert to fraction form
    86,562.17/129,900 = 30,400.82/x
  3. Step 3: Cross multiply
    86,562.17x = 129,900 × 30,400.82
  4. Step 4: Simplify right side
    86,562.17x = 3,949,066,518
  5. Step 5: Solve for x
    x = 3,949,066,518/86,562.17
  6. Step 6: Final answer
    x = 45,621.16

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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.