Home / 84,857.11-117,089.80-49,040.21

Finding the Fourth Proportional to 84,857.11, 117,089.80 and 49,040.21

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Solution

The fourth proportional to 84,857.11, 117,089.80 and 49,040.21 is: 67,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,857.11 : 117,089.80 = 49,040.21 : x
  2. Step 2: Convert to fraction form
    84,857.11/117,089.80 = 49,040.21/x
  3. Step 3: Cross multiply
    84,857.11x = 117,089.80 × 49,040.21
  4. Step 4: Simplify right side
    84,857.11x = 5,742,107,672.81
  5. Step 5: Solve for x
    x = 5,742,107,672.81/84,857.11
  6. Step 6: Final answer
    x = 67,667.96

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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.