Home / 65,678.36-90,601.11-40,197.07

Finding the Fourth Proportional to 65,678.36, 90,601.11 and 40,197.07

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Solution

The fourth proportional to 65,678.36, 90,601.11 and 40,197.07 is: 55,450.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,678.36 : 90,601.11 = 40,197.07 : x
  2. Step 2: Convert to fraction form
    65,678.36/90,601.11 = 40,197.07/x
  3. Step 3: Cross multiply
    65,678.36x = 90,601.11 × 40,197.07
  4. Step 4: Simplify right side
    65,678.36x = 3,641,898,959.76
  5. Step 5: Solve for x
    x = 3,641,898,959.76/65,678.36
  6. Step 6: Final answer
    x = 55,450.52

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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.