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Finding the Fourth Proportional to 77,577.88, 106,835.22 and 73,845.40

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Solution

The fourth proportional to 77,577.88, 106,835.22 and 73,845.40 is: 101,695.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,577.88 : 106,835.22 = 73,845.40 : x
  2. Step 2: Convert to fraction form
    77,577.88/106,835.22 = 73,845.40/x
  3. Step 3: Cross multiply
    77,577.88x = 106,835.22 × 73,845.40
  4. Step 4: Simplify right side
    77,577.88x = 7,889,289,554.99
  5. Step 5: Solve for x
    x = 7,889,289,554.99/77,577.88
  6. Step 6: Final answer
    x = 101,695.09

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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.