Home / 86,359.74-129,556.01-30,215.81

Finding the Fourth Proportional to 86,359.74, 129,556.01 and 30,215.81

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Solution

The fourth proportional to 86,359.74, 129,556.01 and 30,215.81 is: 45,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,359.74 : 129,556.01 = 30,215.81 : x
  2. Step 2: Convert to fraction form
    86,359.74/129,556.01 = 30,215.81/x
  3. Step 3: Cross multiply
    86,359.74x = 129,556.01 × 30,215.81
  4. Step 4: Simplify right side
    86,359.74x = 3,914,639,210.28
  5. Step 5: Solve for x
    x = 3,914,639,210.28/86,359.74
  6. Step 6: Final answer
    x = 45,329.45

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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.