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Finding the Fourth Proportional to 52,228.80, 78,350.40 and 18,940.80

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Solution

The fourth proportional to 52,228.80, 78,350.40 and 18,940.80 is: 28,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,228.80 : 78,350.40 = 18,940.80 : x
  2. Step 2: Convert to fraction form
    52,228.80/78,350.40 = 18,940.80/x
  3. Step 3: Cross multiply
    52,228.80x = 78,350.40 × 18,940.80
  4. Step 4: Simplify right side
    52,228.80x = 1,484,019,256.32
  5. Step 5: Solve for x
    x = 1,484,019,256.32/52,228.80
  6. Step 6: Final answer
    x = 28,413.81

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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.