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Finding the Fourth Proportional to 80,903.58, 121,410.02 and 28,313.52

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Solution

The fourth proportional to 80,903.58, 121,410.02 and 28,313.52 is: 42,489.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,903.58 : 121,410.02 = 28,313.52 : x
  2. Step 2: Convert to fraction form
    80,903.58/121,410.02 = 28,313.52/x
  3. Step 3: Cross multiply
    80,903.58x = 121,410.02 × 28,313.52
  4. Step 4: Simplify right side
    80,903.58x = 3,437,545,029.47
  5. Step 5: Solve for x
    x = 3,437,545,029.47/80,903.58
  6. Step 6: Final answer
    x = 42,489.41

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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.