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Finding the Fourth Proportional to 58,351.88, 87,505.68 and 18,898.40

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Solution

The fourth proportional to 58,351.88, 87,505.68 and 18,898.40 is: 28,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,351.88 : 87,505.68 = 18,898.40 : x
  2. Step 2: Convert to fraction form
    58,351.88/87,505.68 = 18,898.40/x
  3. Step 3: Cross multiply
    58,351.88x = 87,505.68 × 18,898.40
  4. Step 4: Simplify right side
    58,351.88x = 1,653,717,342.91
  5. Step 5: Solve for x
    x = 1,653,717,342.91/58,351.88
  6. Step 6: Final answer
    x = 28,340.43

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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.