Home / 58,112.82-87,138.99-20,667.44

Finding the Fourth Proportional to 58,112.82, 87,138.99 and 20,667.44

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Solution

The fourth proportional to 58,112.82, 87,138.99 and 20,667.44 is: 30,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,112.82 : 87,138.99 = 20,667.44 : x
  2. Step 2: Convert to fraction form
    58,112.82/87,138.99 = 20,667.44/x
  3. Step 3: Cross multiply
    58,112.82x = 87,138.99 × 20,667.44
  4. Step 4: Simplify right side
    58,112.82x = 1,800,939,411.79
  5. Step 5: Solve for x
    x = 1,800,939,411.79/58,112.82
  6. Step 6: Final answer
    x = 30,990.40

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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.