Home / 81,908.64-113,038.56-50,072.40

Finding the Fourth Proportional to 81,908.64, 113,038.56 and 50,072.40

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Solution

The fourth proportional to 81,908.64, 113,038.56 and 50,072.40 is: 69,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,908.64 : 113,038.56 = 50,072.40 : x
  2. Step 2: Convert to fraction form
    81,908.64/113,038.56 = 50,072.40/x
  3. Step 3: Cross multiply
    81,908.64x = 113,038.56 × 50,072.40
  4. Step 4: Simplify right side
    81,908.64x = 5,660,111,991.74
  5. Step 5: Solve for x
    x = 5,660,111,991.74/81,908.64
  6. Step 6: Final answer
    x = 69,102.75

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1.5x scale

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.