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Finding the Fourth Proportional to 72,639.64, 100,250.82 and 43,975.10

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Solution

The fourth proportional to 72,639.64, 100,250.82 and 43,975.10 is: 60,690.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,639.64 : 100,250.82 = 43,975.10 : x
  2. Step 2: Convert to fraction form
    72,639.64/100,250.82 = 43,975.10/x
  3. Step 3: Cross multiply
    72,639.64x = 100,250.82 × 43,975.10
  4. Step 4: Simplify right side
    72,639.64x = 4,408,539,333.33
  5. Step 5: Solve for x
    x = 4,408,539,333.33/72,639.64
  6. Step 6: Final answer
    x = 60,690.55

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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.