Home / 72,821.61-109,232.64-25,436.34

Finding the Fourth Proportional to 72,821.61, 109,232.64 and 25,436.34

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Solution

The fourth proportional to 72,821.61, 109,232.64 and 25,436.34 is: 38,154.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,821.61 : 109,232.64 = 25,436.34 : x
  2. Step 2: Convert to fraction form
    72,821.61/109,232.64 = 25,436.34/x
  3. Step 3: Cross multiply
    72,821.61x = 109,232.64 × 25,436.34
  4. Step 4: Simplify right side
    72,821.61x = 2,778,478,570.14
  5. Step 5: Solve for x
    x = 2,778,478,570.14/72,821.61
  6. Step 6: Final answer
    x = 38,154.59

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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.