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Finding the Fourth Proportional to 66,017.94, 91,107.09 and 47,200.02

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Solution

The fourth proportional to 66,017.94, 91,107.09 and 47,200.02 is: 65,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,017.94 : 91,107.09 = 47,200.02 : x
  2. Step 2: Convert to fraction form
    66,017.94/91,107.09 = 47,200.02/x
  3. Step 3: Cross multiply
    66,017.94x = 91,107.09 × 47,200.02
  4. Step 4: Simplify right side
    66,017.94x = 4,300,256,470.14
  5. Step 5: Solve for x
    x = 4,300,256,470.14/66,017.94
  6. Step 6: Final answer
    x = 65,137.70

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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.