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Finding the Fourth Proportional to 85,033.80, 127,550.70 and 51,208.20

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Solution

The fourth proportional to 85,033.80, 127,550.70 and 51,208.20 is: 76,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,033.80 : 127,550.70 = 51,208.20 : x
  2. Step 2: Convert to fraction form
    85,033.80/127,550.70 = 51,208.20/x
  3. Step 3: Cross multiply
    85,033.80x = 127,550.70 × 51,208.20
  4. Step 4: Simplify right side
    85,033.80x = 6,531,641,755.74
  5. Step 5: Solve for x
    x = 6,531,641,755.74/85,033.80
  6. Step 6: Final answer
    x = 76,812.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.