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Finding the Fourth Proportional to 72,187.74, 108,303.93 and 25,445.34

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Solution

The fourth proportional to 72,187.74, 108,303.93 and 25,445.34 is: 38,175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,187.74 : 108,303.93 = 25,445.34 : x
  2. Step 2: Convert to fraction form
    72,187.74/108,303.93 = 25,445.34/x
  3. Step 3: Cross multiply
    72,187.74x = 108,303.93 × 25,445.34
  4. Step 4: Simplify right side
    72,187.74x = 2,755,830,322.19
  5. Step 5: Solve for x
    x = 2,755,830,322.19/72,187.74
  6. Step 6: Final answer
    x = 38,175.88

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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.