Home / 81,373.72-121,450.52-76,059.28

Finding the Fourth Proportional to 81,373.72, 121,450.52 and 76,059.28

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Solution

The fourth proportional to 81,373.72, 121,450.52 and 76,059.28 is: 113,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,373.72 : 121,450.52 = 76,059.28 : x
  2. Step 2: Convert to fraction form
    81,373.72/121,450.52 = 76,059.28/x
  3. Step 3: Cross multiply
    81,373.72x = 121,450.52 × 76,059.28
  4. Step 4: Simplify right side
    81,373.72x = 9,237,439,106.83
  5. Step 5: Solve for x
    x = 9,237,439,106.83/81,373.72
  6. Step 6: Final answer
    x = 113,518.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.