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Finding the Fourth Proportional to 60,216,658.60, 90,324,987.90 and 19,821,893.80

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Solution

The fourth proportional to 60,216,658.60, 90,324,987.90 and 19,821,893.80 is: 29,732,840.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,216,658.60 : 90,324,987.90 = 19,821,893.80 : x
  2. Step 2: Convert to fraction form
    60,216,658.60/90,324,987.90 = 19,821,893.80/x
  3. Step 3: Cross multiply
    60,216,658.60x = 90,324,987.90 × 19,821,893.80
  4. Step 4: Simplify right side
    60,216,658.60x = 1,790,412,317,640,085.25
  5. Step 5: Solve for x
    x = 1,790,412,317,640,085.25/60,216,658.60
  6. Step 6: Final answer
    x = 29,732,840.70

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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.