Home / 81,318.52-122,117.37-49,913

Finding the Fourth Proportional to 81,318.52, 122,117.37 and 49,913

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Solution

The fourth proportional to 81,318.52, 122,117.37 and 49,913 is: 74,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,318.52 : 122,117.37 = 49,913 : x
  2. Step 2: Convert to fraction form
    81,318.52/122,117.37 = 49,913/x
  3. Step 3: Cross multiply
    81,318.52x = 122,117.37 × 49,913
  4. Step 4: Simplify right side
    81,318.52x = 6,095,244,475.98
  5. Step 5: Solve for x
    x = 6,095,244,475.98/81,318.52
  6. Step 6: Final answer
    x = 74,955.18

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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.