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Finding the Fourth Proportional to 90,015.36, 134,905.60 and 48,413.44

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Solution

The fourth proportional to 90,015.36, 134,905.60 and 48,413.44 is: 72,557.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015.36 : 134,905.60 = 48,413.44 : x
  2. Step 2: Convert to fraction form
    90,015.36/134,905.60 = 48,413.44/x
  3. Step 3: Cross multiply
    90,015.36x = 134,905.60 × 48,413.44
  4. Step 4: Simplify right side
    90,015.36x = 6,531,244,171.26
  5. Step 5: Solve for x
    x = 6,531,244,171.26/90,015.36
  6. Step 6: Final answer
    x = 72,557.00

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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.