Home / 80,869.48-111,609.75-49,038.28

Finding the Fourth Proportional to 80,869.48, 111,609.75 and 49,038.28

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Solution

The fourth proportional to 80,869.48, 111,609.75 and 49,038.28 is: 67,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,869.48 : 111,609.75 = 49,038.28 : x
  2. Step 2: Convert to fraction form
    80,869.48/111,609.75 = 49,038.28/x
  3. Step 3: Cross multiply
    80,869.48x = 111,609.75 × 49,038.28
  4. Step 4: Simplify right side
    80,869.48x = 5,473,150,171.23
  5. Step 5: Solve for x
    x = 5,473,150,171.23/80,869.48
  6. Step 6: Final answer
    x = 67,678.81

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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.