Home / 86,721.71-130,080.53-39,974.58

Finding the Fourth Proportional to 86,721.71, 130,080.53 and 39,974.58

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Solution

The fourth proportional to 86,721.71, 130,080.53 and 39,974.58 is: 59,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,721.71 : 130,080.53 = 39,974.58 : x
  2. Step 2: Convert to fraction form
    86,721.71/130,080.53 = 39,974.58/x
  3. Step 3: Cross multiply
    86,721.71x = 130,080.53 × 39,974.58
  4. Step 4: Simplify right side
    86,721.71x = 5,199,914,652.86
  5. Step 5: Solve for x
    x = 5,199,914,652.86/86,721.71
  6. Step 6: Final answer
    x = 59,960.94

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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.