Home / 48,101.80-66,389.61-31,720.18

Finding the Fourth Proportional to 48,101.80, 66,389.61 and 31,720.18

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Solution

The fourth proportional to 48,101.80, 66,389.61 and 31,720.18 is: 43,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,101.80 : 66,389.61 = 31,720.18 : x
  2. Step 2: Convert to fraction form
    48,101.80/66,389.61 = 31,720.18/x
  3. Step 3: Cross multiply
    48,101.80x = 66,389.61 × 31,720.18
  4. Step 4: Simplify right side
    48,101.80x = 2,105,890,379.33
  5. Step 5: Solve for x
    x = 2,105,890,379.33/48,101.80
  6. Step 6: Final answer
    x = 43,779.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.