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Finding the Fourth Proportional to 57,998.40, 81,022.80 and 57,998.40

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Solution

The fourth proportional to 57,998.40, 81,022.80 and 57,998.40 is: 81,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,998.40 : 81,022.80 = 57,998.40 : x
  2. Step 2: Convert to fraction form
    57,998.40/81,022.80 = 57,998.40/x
  3. Step 3: Cross multiply
    57,998.40x = 81,022.80 × 57,998.40
  4. Step 4: Simplify right side
    57,998.40x = 4,699,192,763.52
  5. Step 5: Solve for x
    x = 4,699,192,763.52/57,998.40
  6. Step 6: Final answer
    x = 81,022.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.