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Finding the Fourth Proportional to 86,072.64, 129,062.88 and 36,797.76

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Solution

The fourth proportional to 86,072.64, 129,062.88 and 36,797.76 is: 55,176.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,072.64 : 129,062.88 = 36,797.76 : x
  2. Step 2: Convert to fraction form
    86,072.64/129,062.88 = 36,797.76/x
  3. Step 3: Cross multiply
    86,072.64x = 129,062.88 × 36,797.76
  4. Step 4: Simplify right side
    86,072.64x = 4,749,224,883.15
  5. Step 5: Solve for x
    x = 4,749,224,883.15/86,072.64
  6. Step 6: Final answer
    x = 55,176.94

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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.