Home / 74,739.23-103,140.08-40,747.71

Finding the Fourth Proportional to 74,739.23, 103,140.08 and 40,747.71

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Solution

The fourth proportional to 74,739.23, 103,140.08 and 40,747.71 is: 56,231.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,739.23 : 103,140.08 = 40,747.71 : x
  2. Step 2: Convert to fraction form
    74,739.23/103,140.08 = 40,747.71/x
  3. Step 3: Cross multiply
    74,739.23x = 103,140.08 × 40,747.71
  4. Step 4: Simplify right side
    74,739.23x = 4,202,721,865.48
  5. Step 5: Solve for x
    x = 4,202,721,865.48/74,739.23
  6. Step 6: Final answer
    x = 56,231.81

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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.