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Finding the Fourth Proportional to 81,064.50, 111,866.85 and 45,253.50

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Solution

The fourth proportional to 81,064.50, 111,866.85 and 45,253.50 is: 62,448.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,064.50 : 111,866.85 = 45,253.50 : x
  2. Step 2: Convert to fraction form
    81,064.50/111,866.85 = 45,253.50/x
  3. Step 3: Cross multiply
    81,064.50x = 111,866.85 × 45,253.50
  4. Step 4: Simplify right side
    81,064.50x = 5,062,366,496.48
  5. Step 5: Solve for x
    x = 5,062,366,496.48/81,064.50
  6. Step 6: Final answer
    x = 62,448.62

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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.