Home / 76,690.26-115,033.95-54,108.18

Finding the Fourth Proportional to 76,690.26, 115,033.95 and 54,108.18

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Solution

The fourth proportional to 76,690.26, 115,033.95 and 54,108.18 is: 81,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,690.26 : 115,033.95 = 54,108.18 : x
  2. Step 2: Convert to fraction form
    76,690.26/115,033.95 = 54,108.18/x
  3. Step 3: Cross multiply
    76,690.26x = 115,033.95 × 54,108.18
  4. Step 4: Simplify right side
    76,690.26x = 6,224,277,672.71
  5. Step 5: Solve for x
    x = 6,224,277,672.71/76,690.26
  6. Step 6: Final answer
    x = 81,161.25

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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.