Home / 72,931.33-100,650.50-40,668.13

Finding the Fourth Proportional to 72,931.33, 100,650.50 and 40,668.13

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Solution

The fourth proportional to 72,931.33, 100,650.50 and 40,668.13 is: 56,124.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,931.33 : 100,650.50 = 40,668.13 : x
  2. Step 2: Convert to fraction form
    72,931.33/100,650.50 = 40,668.13/x
  3. Step 3: Cross multiply
    72,931.33x = 100,650.50 × 40,668.13
  4. Step 4: Simplify right side
    72,931.33x = 4,093,267,618.57
  5. Step 5: Solve for x
    x = 4,093,267,618.57/72,931.33
  6. Step 6: Final answer
    x = 56,124.96

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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.