Home / 72,511.24-100,064-40,243.98

Finding the Fourth Proportional to 72,511.24, 100,064 and 40,243.98

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Solution

The fourth proportional to 72,511.24, 100,064 and 40,243.98 is: 55,535.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,511.24 : 100,064 = 40,243.98 : x
  2. Step 2: Convert to fraction form
    72,511.24/100,064 = 40,243.98/x
  3. Step 3: Cross multiply
    72,511.24x = 100,064 × 40,243.98
  4. Step 4: Simplify right side
    72,511.24x = 4,026,973,614.72
  5. Step 5: Solve for x
    x = 4,026,973,614.72/72,511.24
  6. Step 6: Final answer
    x = 55,535.85

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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.