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Finding the Fourth Proportional to 72,572, 108,858.08 and 28,796

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Solution

The fourth proportional to 72,572, 108,858.08 and 28,796 is: 43,194.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,572 : 108,858.08 = 28,796 : x
  2. Step 2: Convert to fraction form
    72,572/108,858.08 = 28,796/x
  3. Step 3: Cross multiply
    72,572x = 108,858.08 × 28,796
  4. Step 4: Simplify right side
    72,572x = 3,134,677,271.68
  5. Step 5: Solve for x
    x = 3,134,677,271.68/72,572
  6. Step 6: Final answer
    x = 43,194.03

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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.