Home / 81,936.96-113,065.18-60,438.40

Finding the Fourth Proportional to 81,936.96, 113,065.18 and 60,438.40

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Solution

The fourth proportional to 81,936.96, 113,065.18 and 60,438.40 is: 83,399.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,936.96 : 113,065.18 = 60,438.40 : x
  2. Step 2: Convert to fraction form
    81,936.96/113,065.18 = 60,438.40/x
  3. Step 3: Cross multiply
    81,936.96x = 113,065.18 × 60,438.40
  4. Step 4: Simplify right side
    81,936.96x = 6,833,478,574.91
  5. Step 5: Solve for x
    x = 6,833,478,574.91/81,936.96
  6. Step 6: Final answer
    x = 83,399.22

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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.