Home / 72,909.24-100,614.42-40,643.43

Finding the Fourth Proportional to 72,909.24, 100,614.42 and 40,643.43

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Solution

The fourth proportional to 72,909.24, 100,614.42 and 40,643.43 is: 56,087.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,909.24 : 100,614.42 = 40,643.43 : x
  2. Step 2: Convert to fraction form
    72,909.24/100,614.42 = 40,643.43/x
  3. Step 3: Cross multiply
    72,909.24x = 100,614.42 × 40,643.43
  4. Step 4: Simplify right side
    72,909.24x = 4,089,315,136.26
  5. Step 5: Solve for x
    x = 4,089,315,136.26/72,909.24
  6. Step 6: Final answer
    x = 56,087.75

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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.