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Finding the Fourth Proportional to 77,237.75, 106,578.74 and 43,243.57

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Solution

The fourth proportional to 77,237.75, 106,578.74 and 43,243.57 is: 59,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,237.75 : 106,578.74 = 43,243.57 : x
  2. Step 2: Convert to fraction form
    77,237.75/106,578.74 = 43,243.57/x
  3. Step 3: Cross multiply
    77,237.75x = 106,578.74 × 43,243.57
  4. Step 4: Simplify right side
    77,237.75x = 4,608,844,987.48
  5. Step 5: Solve for x
    x = 4,608,844,987.48/77,237.75
  6. Step 6: Final answer
    x = 59,670.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.