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Finding the Fourth Proportional to 81,124.10, 111,950.07 and 45,314.60

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Solution

The fourth proportional to 81,124.10, 111,950.07 and 45,314.60 is: 62,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,124.10 : 111,950.07 = 45,314.60 : x
  2. Step 2: Convert to fraction form
    81,124.10/111,950.07 = 45,314.60/x
  3. Step 3: Cross multiply
    81,124.10x = 111,950.07 × 45,314.60
  4. Step 4: Simplify right side
    81,124.10x = 5,072,972,642.02
  5. Step 5: Solve for x
    x = 5,072,972,642.02/81,124.10
  6. Step 6: Final answer
    x = 62,533.48

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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.