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Finding the Fourth Proportional to 58,653.30, 87,979.15 and 19,211.70

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Solution

The fourth proportional to 58,653.30, 87,979.15 and 19,211.70 is: 28,817.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,653.30 : 87,979.15 = 19,211.70 : x
  2. Step 2: Convert to fraction form
    58,653.30/87,979.15 = 19,211.70/x
  3. Step 3: Cross multiply
    58,653.30x = 87,979.15 × 19,211.70
  4. Step 4: Simplify right side
    58,653.30x = 1,690,229,036.06
  5. Step 5: Solve for x
    x = 1,690,229,036.06/58,653.30
  6. Step 6: Final answer
    x = 28,817.29

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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.