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Finding the Fourth Proportional to 58,520, 87,781.04 and 19,076.96

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Solution

The fourth proportional to 58,520, 87,781.04 and 19,076.96 is: 28,615.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,520 : 87,781.04 = 19,076.96 : x
  2. Step 2: Convert to fraction form
    58,520/87,781.04 = 19,076.96/x
  3. Step 3: Cross multiply
    58,520x = 87,781.04 × 19,076.96
  4. Step 4: Simplify right side
    58,520x = 1,674,595,388.84
  5. Step 5: Solve for x
    x = 1,674,595,388.84/58,520
  6. Step 6: Final answer
    x = 28,615.78

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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.