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Finding the Fourth Proportional to 72,838.79, 100,519.40 and 41,008.82

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Solution

The fourth proportional to 72,838.79, 100,519.40 and 41,008.82 is: 56,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,838.79 : 100,519.40 = 41,008.82 : x
  2. Step 2: Convert to fraction form
    72,838.79/100,519.40 = 41,008.82/x
  3. Step 3: Cross multiply
    72,838.79x = 100,519.40 × 41,008.82
  4. Step 4: Simplify right side
    72,838.79x = 4,122,181,981.11
  5. Step 5: Solve for x
    x = 4,122,181,981.11/72,838.79
  6. Step 6: Final answer
    x = 56,593.22

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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.