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Finding the Fourth Proportional to 72,508.68, 100,106.78 and 48,343.64

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Solution

The fourth proportional to 72,508.68, 100,106.78 and 48,343.64 is: 66,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,508.68 : 100,106.78 = 48,343.64 : x
  2. Step 2: Convert to fraction form
    72,508.68/100,106.78 = 48,343.64/x
  3. Step 3: Cross multiply
    72,508.68x = 100,106.78 × 48,343.64
  4. Step 4: Simplify right side
    72,508.68x = 4,839,526,133.88
  5. Step 5: Solve for x
    x = 4,839,526,133.88/72,508.68
  6. Step 6: Final answer
    x = 66,744.09

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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.