Home / 81,667.24-122,516.35-28,357.19

Finding the Fourth Proportional to 81,667.24, 122,516.35 and 28,357.19

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Solution

The fourth proportional to 81,667.24, 122,516.35 and 28,357.19 is: 42,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,667.24 : 122,516.35 = 28,357.19 : x
  2. Step 2: Convert to fraction form
    81,667.24/122,516.35 = 28,357.19/x
  3. Step 3: Cross multiply
    81,667.24x = 122,516.35 × 28,357.19
  4. Step 4: Simplify right side
    81,667.24x = 3,474,219,191.02
  5. Step 5: Solve for x
    x = 3,474,219,191.02/81,667.24
  6. Step 6: Final answer
    x = 42,541.16

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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.