Home / 77,015.45-106,212.24-64,137.36

Finding the Fourth Proportional to 77,015.45, 106,212.24 and 64,137.36

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Solution

The fourth proportional to 77,015.45, 106,212.24 and 64,137.36 is: 88,452.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.45 : 106,212.24 = 64,137.36 : x
  2. Step 2: Convert to fraction form
    77,015.45/106,212.24 = 64,137.36/x
  3. Step 3: Cross multiply
    77,015.45x = 106,212.24 × 64,137.36
  4. Step 4: Simplify right side
    77,015.45x = 6,812,172,673.29
  5. Step 5: Solve for x
    x = 6,812,172,673.29/77,015.45
  6. Step 6: Final answer
    x = 88,452.03

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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.