Home / 82,412.19-123,490.40-57,161.02

Finding the Fourth Proportional to 82,412.19, 123,490.40 and 57,161.02

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Solution

The fourth proportional to 82,412.19, 123,490.40 and 57,161.02 is: 85,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,412.19 : 123,490.40 = 57,161.02 : x
  2. Step 2: Convert to fraction form
    82,412.19/123,490.40 = 57,161.02/x
  3. Step 3: Cross multiply
    82,412.19x = 123,490.40 × 57,161.02
  4. Step 4: Simplify right side
    82,412.19x = 7,058,837,224.21
  5. Step 5: Solve for x
    x = 7,058,837,224.21/82,412.19
  6. Step 6: Final answer
    x = 85,652.83

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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.