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Finding the Fourth Proportional to 65,962.62, 91,028.52 and 39,118.32

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Solution

The fourth proportional to 65,962.62, 91,028.52 and 39,118.32 is: 53,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,962.62 : 91,028.52 = 39,118.32 : x
  2. Step 2: Convert to fraction form
    65,962.62/91,028.52 = 39,118.32/x
  3. Step 3: Cross multiply
    65,962.62x = 91,028.52 × 39,118.32
  4. Step 4: Simplify right side
    65,962.62x = 3,560,882,774.49
  5. Step 5: Solve for x
    x = 3,560,882,774.49/65,962.62
  6. Step 6: Final answer
    x = 53,983.34

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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.