Home / 82,939.31-124,192.08-45,421.32

Finding the Fourth Proportional to 82,939.31, 124,192.08 and 45,421.32

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Solution

The fourth proportional to 82,939.31, 124,192.08 and 45,421.32 is: 68,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,939.31 : 124,192.08 = 45,421.32 : x
  2. Step 2: Convert to fraction form
    82,939.31/124,192.08 = 45,421.32/x
  3. Step 3: Cross multiply
    82,939.31x = 124,192.08 × 45,421.32
  4. Step 4: Simplify right side
    82,939.31x = 5,640,968,207.15
  5. Step 5: Solve for x
    x = 5,640,968,207.15/82,939.31
  6. Step 6: Final answer
    x = 68,013.20

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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.