Home / 84,265.40-126,355.74-28,085.81

Finding the Fourth Proportional to 84,265.40, 126,355.74 and 28,085.81

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Solution

The fourth proportional to 84,265.40, 126,355.74 and 28,085.81 is: 42,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,265.40 : 126,355.74 = 28,085.81 : x
  2. Step 2: Convert to fraction form
    84,265.40/126,355.74 = 28,085.81/x
  3. Step 3: Cross multiply
    84,265.40x = 126,355.74 × 28,085.81
  4. Step 4: Simplify right side
    84,265.40x = 3,548,803,306.05
  5. Step 5: Solve for x
    x = 3,548,803,306.05/84,265.40
  6. Step 6: Final answer
    x = 42,114.60

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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.