Home / 72,561.40-100,136.22-40,732.60

Finding the Fourth Proportional to 72,561.40, 100,136.22 and 40,732.60

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Solution

The fourth proportional to 72,561.40, 100,136.22 and 40,732.60 is: 56,211.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,561.40 : 100,136.22 = 40,732.60 : x
  2. Step 2: Convert to fraction form
    72,561.40/100,136.22 = 40,732.60/x
  3. Step 3: Cross multiply
    72,561.40x = 100,136.22 × 40,732.60
  4. Step 4: Simplify right side
    72,561.40x = 4,078,808,594.77
  5. Step 5: Solve for x
    x = 4,078,808,594.77/72,561.40
  6. Step 6: Final answer
    x = 56,211.82

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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.