Home / 81,318.94-112,289.39-51,154.74

Finding the Fourth Proportional to 81,318.94, 112,289.39 and 51,154.74

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Solution

The fourth proportional to 81,318.94, 112,289.39 and 51,154.74 is: 70,637.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,318.94 : 112,289.39 = 51,154.74 : x
  2. Step 2: Convert to fraction form
    81,318.94/112,289.39 = 51,154.74/x
  3. Step 3: Cross multiply
    81,318.94x = 112,289.39 × 51,154.74
  4. Step 4: Simplify right side
    81,318.94x = 5,744,134,486.27
  5. Step 5: Solve for x
    x = 5,744,134,486.27/81,318.94
  6. Step 6: Final answer
    x = 70,637.11

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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.