Home / 82,975.31-124,462.99-20,645.81

Finding the Fourth Proportional to 82,975.31, 124,462.99 and 20,645.81

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Solution

The fourth proportional to 82,975.31, 124,462.99 and 20,645.81 is: 30,968.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,975.31 : 124,462.99 = 20,645.81 : x
  2. Step 2: Convert to fraction form
    82,975.31/124,462.99 = 20,645.81/x
  3. Step 3: Cross multiply
    82,975.31x = 124,462.99 × 20,645.81
  4. Step 4: Simplify right side
    82,975.31x = 2,569,638,880.80
  5. Step 5: Solve for x
    x = 2,569,638,880.80/82,975.31
  6. Step 6: Final answer
    x = 30,968.72

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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.