Home / 81,417.48-122,171.58-43,976.76

Finding the Fourth Proportional to 81,417.48, 122,171.58 and 43,976.76

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Solution

The fourth proportional to 81,417.48, 122,171.58 and 43,976.76 is: 65,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,417.48 : 122,171.58 = 43,976.76 : x
  2. Step 2: Convert to fraction form
    81,417.48/122,171.58 = 43,976.76/x
  3. Step 3: Cross multiply
    81,417.48x = 122,171.58 × 43,976.76
  4. Step 4: Simplify right side
    81,417.48x = 5,372,710,252.48
  5. Step 5: Solve for x
    x = 5,372,710,252.48/81,417.48
  6. Step 6: Final answer
    x = 65,989.64

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1.5x scale

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.