Home / 65,933.84-90,972.95-39,071.72

Finding the Fourth Proportional to 65,933.84, 90,972.95 and 39,071.72

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Solution

The fourth proportional to 65,933.84, 90,972.95 and 39,071.72 is: 53,909.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,933.84 : 90,972.95 = 39,071.72 : x
  2. Step 2: Convert to fraction form
    65,933.84/90,972.95 = 39,071.72/x
  3. Step 3: Cross multiply
    65,933.84x = 90,972.95 × 39,071.72
  4. Step 4: Simplify right side
    65,933.84x = 3,554,469,662.05
  5. Step 5: Solve for x
    x = 3,554,469,662.05/65,933.84
  6. Step 6: Final answer
    x = 53,909.64

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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.