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Finding the Fourth Proportional to 111,113.52, 166,670.36 and 28,007.52

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Solution

The fourth proportional to 111,113.52, 166,670.36 and 28,007.52 is: 42,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,113.52 : 166,670.36 = 28,007.52 : x
  2. Step 2: Convert to fraction form
    111,113.52/166,670.36 = 28,007.52/x
  3. Step 3: Cross multiply
    111,113.52x = 166,670.36 × 28,007.52
  4. Step 4: Simplify right side
    111,113.52x = 4,668,023,441.11
  5. Step 5: Solve for x
    x = 4,668,023,441.11/111,113.52
  6. Step 6: Final answer
    x = 42,011.30

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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.