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Finding the Fourth Proportional to 53,993.80, 80,990.66 and 28,999.44

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Solution

The fourth proportional to 53,993.80, 80,990.66 and 28,999.44 is: 43,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,993.80 : 80,990.66 = 28,999.44 : x
  2. Step 2: Convert to fraction form
    53,993.80/80,990.66 = 28,999.44/x
  3. Step 3: Cross multiply
    53,993.80x = 80,990.66 × 28,999.44
  4. Step 4: Simplify right side
    53,993.80x = 2,348,683,785.23
  5. Step 5: Solve for x
    x = 2,348,683,785.23/53,993.80
  6. Step 6: Final answer
    x = 43,499.14

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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.