Home / 82,762.07-124,143.40-20,432.57

Finding the Fourth Proportional to 82,762.07, 124,143.40 and 20,432.57

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Solution

The fourth proportional to 82,762.07, 124,143.40 and 20,432.57 is: 30,648.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,762.07 : 124,143.40 = 20,432.57 : x
  2. Step 2: Convert to fraction form
    82,762.07/124,143.40 = 20,432.57/x
  3. Step 3: Cross multiply
    82,762.07x = 124,143.40 × 20,432.57
  4. Step 4: Simplify right side
    82,762.07x = 2,536,568,089.82
  5. Step 5: Solve for x
    x = 2,536,568,089.82/82,762.07
  6. Step 6: Final answer
    x = 30,648.92

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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.