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Finding the Fourth Proportional to 43,258.88, 64,887.90 and 13,676.71

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Solution

The fourth proportional to 43,258.88, 64,887.90 and 13,676.71 is: 20,514.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,258.88 : 64,887.90 = 13,676.71 : x
  2. Step 2: Convert to fraction form
    43,258.88/64,887.90 = 13,676.71/x
  3. Step 3: Cross multiply
    43,258.88x = 64,887.90 × 13,676.71
  4. Step 4: Simplify right side
    43,258.88x = 887,452,666.37
  5. Step 5: Solve for x
    x = 887,452,666.37/43,258.88
  6. Step 6: Final answer
    x = 20,514.93

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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.