Home / 65,619.78-90,554.27-36,939.38

Finding the Fourth Proportional to 65,619.78, 90,554.27 and 36,939.38

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Solution

The fourth proportional to 65,619.78, 90,554.27 and 36,939.38 is: 50,975.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,619.78 : 90,554.27 = 36,939.38 : x
  2. Step 2: Convert to fraction form
    65,619.78/90,554.27 = 36,939.38/x
  3. Step 3: Cross multiply
    65,619.78x = 90,554.27 × 36,939.38
  4. Step 4: Simplify right side
    65,619.78x = 3,345,018,590.15
  5. Step 5: Solve for x
    x = 3,345,018,590.15/65,619.78
  6. Step 6: Final answer
    x = 50,975.77

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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.