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Finding the Fourth Proportional to 72,388.17, 108,582.26 and 35,426.25

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Solution

The fourth proportional to 72,388.17, 108,582.26 and 35,426.25 is: 53,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,388.17 : 108,582.26 = 35,426.25 : x
  2. Step 2: Convert to fraction form
    72,388.17/108,582.26 = 35,426.25/x
  3. Step 3: Cross multiply
    72,388.17x = 108,582.26 × 35,426.25
  4. Step 4: Simplify right side
    72,388.17x = 3,846,662,111.19
  5. Step 5: Solve for x
    x = 3,846,662,111.19/72,388.17
  6. Step 6: Final answer
    x = 53,139.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.