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Finding the Fourth Proportional to 66,684.57, 99,884.29 and 53,979.46

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Solution

The fourth proportional to 66,684.57, 99,884.29 and 53,979.46 is: 80,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,684.57 : 99,884.29 = 53,979.46 : x
  2. Step 2: Convert to fraction form
    66,684.57/99,884.29 = 53,979.46/x
  3. Step 3: Cross multiply
    66,684.57x = 99,884.29 × 53,979.46
  4. Step 4: Simplify right side
    66,684.57x = 5,391,700,315.08
  5. Step 5: Solve for x
    x = 5,391,700,315.08/66,684.57
  6. Step 6: Final answer
    x = 80,853.80

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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.