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Finding the Fourth Proportional to 57,412.80, 85,665.60 and 49,636.80

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Solution

The fourth proportional to 57,412.80, 85,665.60 and 49,636.80 is: 74,063.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,412.80 : 85,665.60 = 49,636.80 : x
  2. Step 2: Convert to fraction form
    57,412.80/85,665.60 = 49,636.80/x
  3. Step 3: Cross multiply
    57,412.80x = 85,665.60 × 49,636.80
  4. Step 4: Simplify right side
    57,412.80x = 4,252,166,254.08
  5. Step 5: Solve for x
    x = 4,252,166,254.08/57,412.80
  6. Step 6: Final answer
    x = 74,063.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.