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Finding the Fourth Proportional to 69,449.60, 104,028.60 and 57,785.60

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Solution

The fourth proportional to 69,449.60, 104,028.60 and 57,785.60 is: 86,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,449.60 : 104,028.60 = 57,785.60 : x
  2. Step 2: Convert to fraction form
    69,449.60/104,028.60 = 57,785.60/x
  3. Step 3: Cross multiply
    69,449.60x = 104,028.60 × 57,785.60
  4. Step 4: Simplify right side
    69,449.60x = 6,011,355,068.16
  5. Step 5: Solve for x
    x = 6,011,355,068.16/69,449.60
  6. Step 6: Final answer
    x = 86,557.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.