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Finding the Fourth Proportional to 80,950.60, 111,698.40 and 45,139.60

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Solution

The fourth proportional to 80,950.60, 111,698.40 and 45,139.60 is: 62,285.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.60 : 111,698.40 = 45,139.60 : x
  2. Step 2: Convert to fraction form
    80,950.60/111,698.40 = 45,139.60/x
  3. Step 3: Cross multiply
    80,950.60x = 111,698.40 × 45,139.60
  4. Step 4: Simplify right side
    80,950.60x = 5,042,021,096.64
  5. Step 5: Solve for x
    x = 5,042,021,096.64/80,950.60
  6. Step 6: Final answer
    x = 62,285.16

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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.