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Finding the Fourth Proportional to 60,772.80, 91,158.60 and 19,219.80

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Solution

The fourth proportional to 60,772.80, 91,158.60 and 19,219.80 is: 28,829.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,772.80 : 91,158.60 = 19,219.80 : x
  2. Step 2: Convert to fraction form
    60,772.80/91,158.60 = 19,219.80/x
  3. Step 3: Cross multiply
    60,772.80x = 91,158.60 × 19,219.80
  4. Step 4: Simplify right side
    60,772.80x = 1,752,050,060.28
  5. Step 5: Solve for x
    x = 1,752,050,060.28/60,772.80
  6. Step 6: Final answer
    x = 28,829.51

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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.