Home / 74,749.64-103,155.32-40,757.86

Finding the Fourth Proportional to 74,749.64, 103,155.32 and 40,757.86

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Solution

The fourth proportional to 74,749.64, 103,155.32 and 40,757.86 is: 56,246.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,749.64 : 103,155.32 = 40,757.86 : x
  2. Step 2: Convert to fraction form
    74,749.64/103,155.32 = 40,757.86/x
  3. Step 3: Cross multiply
    74,749.64x = 103,155.32 × 40,757.86
  4. Step 4: Simplify right side
    74,749.64x = 4,204,390,090.82
  5. Step 5: Solve for x
    x = 4,204,390,090.82/74,749.64
  6. Step 6: Final answer
    x = 56,246.29

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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.