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Finding the Fourth Proportional to 72,477, 100,029.20 and 44,199.09

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Solution

The fourth proportional to 72,477, 100,029.20 and 44,199.09 is: 61,001.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,477 : 100,029.20 = 44,199.09 : x
  2. Step 2: Convert to fraction form
    72,477/100,029.20 = 44,199.09/x
  3. Step 3: Cross multiply
    72,477x = 100,029.20 × 44,199.09
  4. Step 4: Simplify right side
    72,477x = 4,421,199,392.43
  5. Step 5: Solve for x
    x = 4,421,199,392.43/72,477
  6. Step 6: Final answer
    x = 61,001.41

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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.