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Finding the Fourth Proportional to 72,507.26, 100,054.90 and 40,243.52

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Solution

The fourth proportional to 72,507.26, 100,054.90 and 40,243.52 is: 55,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,507.26 : 100,054.90 = 40,243.52 : x
  2. Step 2: Convert to fraction form
    72,507.26/100,054.90 = 40,243.52/x
  3. Step 3: Cross multiply
    72,507.26x = 100,054.90 × 40,243.52
  4. Step 4: Simplify right side
    72,507.26x = 4,026,561,369.25
  5. Step 5: Solve for x
    x = 4,026,561,369.25/72,507.26
  6. Step 6: Final answer
    x = 55,533.22

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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.