Home / 84,589.18-126,894.74-28,405.15

Finding the Fourth Proportional to 84,589.18, 126,894.74 and 28,405.15

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Solution

The fourth proportional to 84,589.18, 126,894.74 and 28,405.15 is: 42,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,589.18 : 126,894.74 = 28,405.15 : x
  2. Step 2: Convert to fraction form
    84,589.18/126,894.74 = 28,405.15/x
  3. Step 3: Cross multiply
    84,589.18x = 126,894.74 × 28,405.15
  4. Step 4: Simplify right side
    84,589.18x = 3,604,463,664.65
  5. Step 5: Solve for x
    x = 3,604,463,664.65/84,589.18
  6. Step 6: Final answer
    x = 42,611.40

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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.