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Finding the Fourth Proportional to 56,364.76, 84,546.78 and 16,921.72

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Solution

The fourth proportional to 56,364.76, 84,546.78 and 16,921.72 is: 25,382.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,364.76 : 84,546.78 = 16,921.72 : x
  2. Step 2: Convert to fraction form
    56,364.76/84,546.78 = 16,921.72/x
  3. Step 3: Cross multiply
    56,364.76x = 84,546.78 × 16,921.72
  4. Step 4: Simplify right side
    56,364.76x = 1,430,676,938.06
  5. Step 5: Solve for x
    x = 1,430,676,938.06/56,364.76
  6. Step 6: Final answer
    x = 25,382.47

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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.