Home / 82,678.16-124,017.72-20,348.24

Finding the Fourth Proportional to 82,678.16, 124,017.72 and 20,348.24

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Solution

The fourth proportional to 82,678.16, 124,017.72 and 20,348.24 is: 30,522.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,678.16 : 124,017.72 = 20,348.24 : x
  2. Step 2: Convert to fraction form
    82,678.16/124,017.72 = 20,348.24/x
  3. Step 3: Cross multiply
    82,678.16x = 124,017.72 × 20,348.24
  4. Step 4: Simplify right side
    82,678.16x = 2,523,542,330.81
  5. Step 5: Solve for x
    x = 2,523,542,330.81/82,678.16
  6. Step 6: Final answer
    x = 30,522.48

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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.