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Finding the Fourth Proportional to 60,728.50, 91,092.75 and 19,175.50

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Solution

The fourth proportional to 60,728.50, 91,092.75 and 19,175.50 is: 28,763.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,728.50 : 91,092.75 = 19,175.50 : x
  2. Step 2: Convert to fraction form
    60,728.50/91,092.75 = 19,175.50/x
  3. Step 3: Cross multiply
    60,728.50x = 91,092.75 × 19,175.50
  4. Step 4: Simplify right side
    60,728.50x = 1,746,749,027.63
  5. Step 5: Solve for x
    x = 1,746,749,027.63/60,728.50
  6. Step 6: Final answer
    x = 28,763.25

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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.