Home / 84,405.84-116,425.13-54,143.21

Finding the Fourth Proportional to 84,405.84, 116,425.13 and 54,143.21

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Solution

The fourth proportional to 84,405.84, 116,425.13 and 54,143.21 is: 74,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,405.84 : 116,425.13 = 54,143.21 : x
  2. Step 2: Convert to fraction form
    84,405.84/116,425.13 = 54,143.21/x
  3. Step 3: Cross multiply
    84,405.84x = 116,425.13 × 54,143.21
  4. Step 4: Simplify right side
    84,405.84x = 6,303,629,410.03
  5. Step 5: Solve for x
    x = 6,303,629,410.03/84,405.84
  6. Step 6: Final answer
    x = 74,682.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.