Home / 82,920.40-124,366.20-30,302.80

Finding the Fourth Proportional to 82,920.40, 124,366.20 and 30,302.80

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Solution

The fourth proportional to 82,920.40, 124,366.20 and 30,302.80 is: 45,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,920.40 : 124,366.20 = 30,302.80 : x
  2. Step 2: Convert to fraction form
    82,920.40/124,366.20 = 30,302.80/x
  3. Step 3: Cross multiply
    82,920.40x = 124,366.20 × 30,302.80
  4. Step 4: Simplify right side
    82,920.40x = 3,768,644,085.36
  5. Step 5: Solve for x
    x = 3,768,644,085.36/82,920.40
  6. Step 6: Final answer
    x = 45,448.94

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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.