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Finding the Fourth Proportional to 86,688.72, 119,629.02 and 48,448.80

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Solution

The fourth proportional to 86,688.72, 119,629.02 and 48,448.80 is: 66,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,688.72 : 119,629.02 = 48,448.80 : x
  2. Step 2: Convert to fraction form
    86,688.72/119,629.02 = 48,448.80/x
  3. Step 3: Cross multiply
    86,688.72x = 119,629.02 × 48,448.80
  4. Step 4: Simplify right side
    86,688.72x = 5,795,882,464.18
  5. Step 5: Solve for x
    x = 5,795,882,464.18/86,688.72
  6. Step 6: Final answer
    x = 66,858.55

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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.