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Finding the Fourth Proportional to 58,715, 88,085.48 and 21,779

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Solution

The fourth proportional to 58,715, 88,085.48 and 21,779 is: 32,673.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,715 : 88,085.48 = 21,779 : x
  2. Step 2: Convert to fraction form
    58,715/88,085.48 = 21,779/x
  3. Step 3: Cross multiply
    58,715x = 88,085.48 × 21,779
  4. Step 4: Simplify right side
    58,715x = 1,918,413,668.92
  5. Step 5: Solve for x
    x = 1,918,413,668.92/58,715
  6. Step 6: Final answer
    x = 32,673.31

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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.