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Finding the Fourth Proportional to 72,451.58, 100,004.70 and 50,947.89

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Solution

The fourth proportional to 72,451.58, 100,004.70 and 50,947.89 is: 70,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,451.58 : 100,004.70 = 50,947.89 : x
  2. Step 2: Convert to fraction form
    72,451.58/100,004.70 = 50,947.89/x
  3. Step 3: Cross multiply
    72,451.58x = 100,004.70 × 50,947.89
  4. Step 4: Simplify right side
    72,451.58x = 5,095,028,455.08
  5. Step 5: Solve for x
    x = 5,095,028,455.08/72,451.58
  6. Step 6: Final answer
    x = 70,323.23

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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.