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Finding the Fourth Proportional to 72,595.67, 108,851.63 and 28,170.51

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Solution

The fourth proportional to 72,595.67, 108,851.63 and 28,170.51 is: 42,239.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,595.67 : 108,851.63 = 28,170.51 : x
  2. Step 2: Convert to fraction form
    72,595.67/108,851.63 = 28,170.51/x
  3. Step 3: Cross multiply
    72,595.67x = 108,851.63 × 28,170.51
  4. Step 4: Simplify right side
    72,595.67x = 3,066,405,790.58
  5. Step 5: Solve for x
    x = 3,066,405,790.58/72,595.67
  6. Step 6: Final answer
    x = 42,239.52

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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.