Home / 81,470.34-112,433.48-45,671.86

Finding the Fourth Proportional to 81,470.34, 112,433.48 and 45,671.86

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Solution

The fourth proportional to 81,470.34, 112,433.48 and 45,671.86 is: 63,029.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,470.34 : 112,433.48 = 45,671.86 : x
  2. Step 2: Convert to fraction form
    81,470.34/112,433.48 = 45,671.86/x
  3. Step 3: Cross multiply
    81,470.34x = 112,433.48 × 45,671.86
  4. Step 4: Simplify right side
    81,470.34x = 5,135,046,157.87
  5. Step 5: Solve for x
    x = 5,135,046,157.87/81,470.34
  6. Step 6: Final answer
    x = 63,029.64

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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.