Home / 76,138.36-105,071.18-42,604.28

Finding the Fourth Proportional to 76,138.36, 105,071.18 and 42,604.28

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Solution

The fourth proportional to 76,138.36, 105,071.18 and 42,604.28 is: 58,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,138.36 : 105,071.18 = 42,604.28 : x
  2. Step 2: Convert to fraction form
    76,138.36/105,071.18 = 42,604.28/x
  3. Step 3: Cross multiply
    76,138.36x = 105,071.18 × 42,604.28
  4. Step 4: Simplify right side
    76,138.36x = 4,476,481,972.65
  5. Step 5: Solve for x
    x = 4,476,481,972.65/76,138.36
  6. Step 6: Final answer
    x = 58,794.04

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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.