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Finding the Fourth Proportional to 72,480.93, 100,028.67 and 40,651.88

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Solution

The fourth proportional to 72,480.93, 100,028.67 and 40,651.88 is: 56,102.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,480.93 : 100,028.67 = 40,651.88 : x
  2. Step 2: Convert to fraction form
    72,480.93/100,028.67 = 40,651.88/x
  3. Step 3: Cross multiply
    72,480.93x = 100,028.67 × 40,651.88
  4. Step 4: Simplify right side
    72,480.93x = 4,066,353,065.48
  5. Step 5: Solve for x
    x = 4,066,353,065.48/72,480.93
  6. Step 6: Final answer
    x = 56,102.39

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1.5x scale

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.