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Finding the Fourth Proportional to 30,987.26, 46,480.48 and 7,613.90

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Solution

The fourth proportional to 30,987.26, 46,480.48 and 7,613.90 is: 11,420.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.26 : 46,480.48 = 7,613.90 : x
  2. Step 2: Convert to fraction form
    30,987.26/46,480.48 = 7,613.90/x
  3. Step 3: Cross multiply
    30,987.26x = 46,480.48 × 7,613.90
  4. Step 4: Simplify right side
    30,987.26x = 353,897,726.67
  5. Step 5: Solve for x
    x = 353,897,726.67/30,987.26
  6. Step 6: Final answer
    x = 11,420.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.