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Finding the Fourth Proportional to 56,012.68, 84,020.64 and 20,945.64

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Solution

The fourth proportional to 56,012.68, 84,020.64 and 20,945.64 is: 31,419.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,012.68 : 84,020.64 = 20,945.64 : x
  2. Step 2: Convert to fraction form
    56,012.68/84,020.64 = 20,945.64/x
  3. Step 3: Cross multiply
    56,012.68x = 84,020.64 × 20,945.64
  4. Step 4: Simplify right side
    56,012.68x = 1,759,866,078.01
  5. Step 5: Solve for x
    x = 1,759,866,078.01/56,012.68
  6. Step 6: Final answer
    x = 31,419.07

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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.