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Finding the Fourth Proportional to 66,477, 99,659.57 and 30,920.26

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Solution

The fourth proportional to 66,477, 99,659.57 and 30,920.26 is: 46,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,477 : 99,659.57 = 30,920.26 : x
  2. Step 2: Convert to fraction form
    66,477/99,659.57 = 30,920.26/x
  3. Step 3: Cross multiply
    66,477x = 99,659.57 × 30,920.26
  4. Step 4: Simplify right side
    66,477x = 3,081,499,644.04
  5. Step 5: Solve for x
    x = 3,081,499,644.04/66,477
  6. Step 6: Final answer
    x = 46,354.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.