Home / 65,921.62-90,971.94-39,077.32

Finding the Fourth Proportional to 65,921.62, 90,971.94 and 39,077.32

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Solution

The fourth proportional to 65,921.62, 90,971.94 and 39,077.32 is: 53,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,921.62 : 90,971.94 = 39,077.32 : x
  2. Step 2: Convert to fraction form
    65,921.62/90,971.94 = 39,077.32/x
  3. Step 3: Cross multiply
    65,921.62x = 90,971.94 × 39,077.32
  4. Step 4: Simplify right side
    65,921.62x = 3,554,939,610.40
  5. Step 5: Solve for x
    x = 3,554,939,610.40/65,921.62
  6. Step 6: Final answer
    x = 53,926.76

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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.