Home / 72,611.28-108,889.20-43,037.36

Finding the Fourth Proportional to 72,611.28, 108,889.20 and 43,037.36

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Solution

The fourth proportional to 72,611.28, 108,889.20 and 43,037.36 is: 64,539.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,611.28 : 108,889.20 = 43,037.36 : x
  2. Step 2: Convert to fraction form
    72,611.28/108,889.20 = 43,037.36/x
  3. Step 3: Cross multiply
    72,611.28x = 108,889.20 × 43,037.36
  4. Step 4: Simplify right side
    72,611.28x = 4,686,303,700.51
  5. Step 5: Solve for x
    x = 4,686,303,700.51/72,611.28
  6. Step 6: Final answer
    x = 64,539.61

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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.