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Finding the Fourth Proportional to 72,628.56, 100,301.76 and 50,026.32

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Solution

The fourth proportional to 72,628.56, 100,301.76 and 50,026.32 is: 69,087.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,628.56 : 100,301.76 = 50,026.32 : x
  2. Step 2: Convert to fraction form
    72,628.56/100,301.76 = 50,026.32/x
  3. Step 3: Cross multiply
    72,628.56x = 100,301.76 × 50,026.32
  4. Step 4: Simplify right side
    72,628.56x = 5,017,727,942.32
  5. Step 5: Solve for x
    x = 5,017,727,942.32/72,628.56
  6. Step 6: Final answer
    x = 69,087.53

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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.