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Finding the Fourth Proportional to 77,010.16, 115,515.16 and 28,987.73

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Solution

The fourth proportional to 77,010.16, 115,515.16 and 28,987.73 is: 43,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,010.16 : 115,515.16 = 28,987.73 : x
  2. Step 2: Convert to fraction form
    77,010.16/115,515.16 = 28,987.73/x
  3. Step 3: Cross multiply
    77,010.16x = 115,515.16 × 28,987.73
  4. Step 4: Simplify right side
    77,010.16x = 3,348,522,485.31
  5. Step 5: Solve for x
    x = 3,348,522,485.31/77,010.16
  6. Step 6: Final answer
    x = 43,481.57

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1.5x scale

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.