Home / 81,539.16-122,391.66-56,240.43

Finding the Fourth Proportional to 81,539.16, 122,391.66 and 56,240.43

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Solution

The fourth proportional to 81,539.16, 122,391.66 and 56,240.43 is: 84,417.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,539.16 : 122,391.66 = 56,240.43 : x
  2. Step 2: Convert to fraction form
    81,539.16/122,391.66 = 56,240.43/x
  3. Step 3: Cross multiply
    81,539.16x = 122,391.66 × 56,240.43
  4. Step 4: Simplify right side
    81,539.16x = 6,883,359,022.39
  5. Step 5: Solve for x
    x = 6,883,359,022.39/81,539.16
  6. Step 6: Final answer
    x = 84,417.83

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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.