Home / 82,757.30-124,038.74-38,290.11

Finding the Fourth Proportional to 82,757.30, 124,038.74 and 38,290.11

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Solution

The fourth proportional to 82,757.30, 124,038.74 and 38,290.11 is: 57,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,757.30 : 124,038.74 = 38,290.11 : x
  2. Step 2: Convert to fraction form
    82,757.30/124,038.74 = 38,290.11/x
  3. Step 3: Cross multiply
    82,757.30x = 124,038.74 × 38,290.11
  4. Step 4: Simplify right side
    82,757.30x = 4,749,456,807.41
  5. Step 5: Solve for x
    x = 4,749,456,807.41/82,757.30
  6. Step 6: Final answer
    x = 57,390.19

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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.