Home / 86,574.46-129,869.08-30,409.68

Finding the Fourth Proportional to 86,574.46, 129,869.08 and 30,409.68

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Solution

The fourth proportional to 86,574.46, 129,869.08 and 30,409.68 is: 45,617.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,574.46 : 129,869.08 = 30,409.68 : x
  2. Step 2: Convert to fraction form
    86,574.46/129,869.08 = 30,409.68/x
  3. Step 3: Cross multiply
    86,574.46x = 129,869.08 × 30,409.68
  4. Step 4: Simplify right side
    86,574.46x = 3,949,277,164.69
  5. Step 5: Solve for x
    x = 3,949,277,164.69/86,574.46
  6. Step 6: Final answer
    x = 45,617.12

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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.