Home / 86,574.18-129,868.71-30,409.41

Finding the Fourth Proportional to 86,574.18, 129,868.71 and 30,409.41

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Solution

The fourth proportional to 86,574.18, 129,868.71 and 30,409.41 is: 45,616.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,574.18 : 129,868.71 = 30,409.41 : x
  2. Step 2: Convert to fraction form
    86,574.18/129,868.71 = 30,409.41/x
  3. Step 3: Cross multiply
    86,574.18x = 129,868.71 × 30,409.41
  4. Step 4: Simplify right side
    86,574.18x = 3,949,230,848.56
  5. Step 5: Solve for x
    x = 3,949,230,848.56/86,574.18
  6. Step 6: Final answer
    x = 45,616.73

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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.