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Finding the Fourth Proportional to 60,485, 83,469.30 and 33,989

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Solution

The fourth proportional to 60,485, 83,469.30 and 33,989 is: 46,904.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,485 : 83,469.30 = 33,989 : x
  2. Step 2: Convert to fraction form
    60,485/83,469.30 = 33,989/x
  3. Step 3: Cross multiply
    60,485x = 83,469.30 × 33,989
  4. Step 4: Simplify right side
    60,485x = 2,837,038,037.70
  5. Step 5: Solve for x
    x = 2,837,038,037.70/60,485
  6. Step 6: Final answer
    x = 46,904.82

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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.