Home / 72,114.48-99,513.60-40,285.44

Finding the Fourth Proportional to 72,114.48, 99,513.60 and 40,285.44

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Solution

The fourth proportional to 72,114.48, 99,513.60 and 40,285.44 is: 55,591.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,114.48 : 99,513.60 = 40,285.44 : x
  2. Step 2: Convert to fraction form
    72,114.48/99,513.60 = 40,285.44/x
  3. Step 3: Cross multiply
    72,114.48x = 99,513.60 × 40,285.44
  4. Step 4: Simplify right side
    72,114.48x = 4,008,949,161.98
  5. Step 5: Solve for x
    x = 4,008,949,161.98/72,114.48
  6. Step 6: Final answer
    x = 55,591.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.