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Finding the Fourth Proportional to 66,509.22, 91,656.09 and 47,613.54

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Solution

The fourth proportional to 66,509.22, 91,656.09 and 47,613.54 is: 65,616.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.22 : 91,656.09 = 47,613.54 : x
  2. Step 2: Convert to fraction form
    66,509.22/91,656.09 = 47,613.54/x
  3. Step 3: Cross multiply
    66,509.22x = 91,656.09 × 47,613.54
  4. Step 4: Simplify right side
    66,509.22x = 4,364,070,907.46
  5. Step 5: Solve for x
    x = 4,364,070,907.46/66,509.22
  6. Step 6: Final answer
    x = 65,616.03

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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.