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Finding the Fourth Proportional to 72,493.72, 100,034.62 and 40,656.48

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Solution

The fourth proportional to 72,493.72, 100,034.62 and 40,656.48 is: 56,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,493.72 : 100,034.62 = 40,656.48 : x
  2. Step 2: Convert to fraction form
    72,493.72/100,034.62 = 40,656.48/x
  3. Step 3: Cross multiply
    72,493.72x = 100,034.62 × 40,656.48
  4. Step 4: Simplify right side
    72,493.72x = 4,067,055,527.34
  5. Step 5: Solve for x
    x = 4,067,055,527.34/72,493.72
  6. Step 6: Final answer
    x = 56,102.18

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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.