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Finding the Fourth Proportional to 73,285.66, 109,932.85 and 28,307.36

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Solution

The fourth proportional to 73,285.66, 109,932.85 and 28,307.36 is: 42,462.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,285.66 : 109,932.85 = 28,307.36 : x
  2. Step 2: Convert to fraction form
    73,285.66/109,932.85 = 28,307.36/x
  3. Step 3: Cross multiply
    73,285.66x = 109,932.85 × 28,307.36
  4. Step 4: Simplify right side
    73,285.66x = 3,111,909,070.99
  5. Step 5: Solve for x
    x = 3,111,909,070.99/73,285.66
  6. Step 6: Final answer
    x = 42,462.73

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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.