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Finding the Fourth Proportional to 51,256, 76,886.88 and 14,322.88

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Solution

The fourth proportional to 51,256, 76,886.88 and 14,322.88 is: 21,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,256 : 76,886.88 = 14,322.88 : x
  2. Step 2: Convert to fraction form
    51,256/76,886.88 = 14,322.88/x
  3. Step 3: Cross multiply
    51,256x = 76,886.88 × 14,322.88
  4. Step 4: Simplify right side
    51,256x = 1,101,241,555.81
  5. Step 5: Solve for x
    x = 1,101,241,555.81/51,256
  6. Step 6: Final answer
    x = 21,485.12

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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.