Home / 84,660.10-126,979.74-49,140.77

Finding the Fourth Proportional to 84,660.10, 126,979.74 and 49,140.77

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Solution

The fourth proportional to 84,660.10, 126,979.74 and 49,140.77 is: 73,705.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,660.10 : 126,979.74 = 49,140.77 : x
  2. Step 2: Convert to fraction form
    84,660.10/126,979.74 = 49,140.77/x
  3. Step 3: Cross multiply
    84,660.10x = 126,979.74 × 49,140.77
  4. Step 4: Simplify right side
    84,660.10x = 6,239,881,563.10
  5. Step 5: Solve for x
    x = 6,239,881,563.10/84,660.10
  6. Step 6: Final answer
    x = 73,705.11

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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.