Home / 86,688.28-119,620.92-59,487.72

Finding the Fourth Proportional to 86,688.28, 119,620.92 and 59,487.72

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Solution

The fourth proportional to 86,688.28, 119,620.92 and 59,487.72 is: 82,086.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,688.28 : 119,620.92 = 59,487.72 : x
  2. Step 2: Convert to fraction form
    86,688.28/119,620.92 = 59,487.72/x
  3. Step 3: Cross multiply
    86,688.28x = 119,620.92 × 59,487.72
  4. Step 4: Simplify right side
    86,688.28x = 7,115,975,795.10
  5. Step 5: Solve for x
    x = 7,115,975,795.10/86,688.28
  6. Step 6: Final answer
    x = 82,086.94

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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.