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Finding the Fourth Proportional to 72,716.64, 100,358.64 and 53,907.36

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Solution

The fourth proportional to 72,716.64, 100,358.64 and 53,907.36 is: 74,399.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,716.64 : 100,358.64 = 53,907.36 : x
  2. Step 2: Convert to fraction form
    72,716.64/100,358.64 = 53,907.36/x
  3. Step 3: Cross multiply
    72,716.64x = 100,358.64 × 53,907.36
  4. Step 4: Simplify right side
    72,716.64x = 5,410,069,335.59
  5. Step 5: Solve for x
    x = 5,410,069,335.59/72,716.64
  6. Step 6: Final answer
    x = 74,399.33

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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.