Home / 72,768.40-109,166.47-25,397.02

Finding the Fourth Proportional to 72,768.40, 109,166.47 and 25,397.02

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Solution

The fourth proportional to 72,768.40, 109,166.47 and 25,397.02 is: 38,100.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768.40 : 109,166.47 = 25,397.02 : x
  2. Step 2: Convert to fraction form
    72,768.40/109,166.47 = 25,397.02/x
  3. Step 3: Cross multiply
    72,768.40x = 109,166.47 × 25,397.02
  4. Step 4: Simplify right side
    72,768.40x = 2,772,503,190.12
  5. Step 5: Solve for x
    x = 2,772,503,190.12/72,768.40
  6. Step 6: Final answer
    x = 38,100.37

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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.