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Finding the Fourth Proportional to 77,015.99, 106,278.26 and 43,017.71

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Solution

The fourth proportional to 77,015.99, 106,278.26 and 43,017.71 is: 59,362.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.99 : 106,278.26 = 43,017.71 : x
  2. Step 2: Convert to fraction form
    77,015.99/106,278.26 = 43,017.71/x
  3. Step 3: Cross multiply
    77,015.99x = 106,278.26 × 43,017.71
  4. Step 4: Simplify right side
    77,015.99x = 4,571,847,367.98
  5. Step 5: Solve for x
    x = 4,571,847,367.98/77,015.99
  6. Step 6: Final answer
    x = 59,362.31

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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.