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Finding the Fourth Proportional to 81,289.86, 112,174.80 and 45,473.70

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Solution

The fourth proportional to 81,289.86, 112,174.80 and 45,473.70 is: 62,750.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.86 : 112,174.80 = 45,473.70 : x
  2. Step 2: Convert to fraction form
    81,289.86/112,174.80 = 45,473.70/x
  3. Step 3: Cross multiply
    81,289.86x = 112,174.80 × 45,473.70
  4. Step 4: Simplify right side
    81,289.86x = 5,101,003,202.76
  5. Step 5: Solve for x
    x = 5,101,003,202.76/81,289.86
  6. Step 6: Final answer
    x = 62,750.79

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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.