Home / 76,215.20-105,175.60-42,223.57

Finding the Fourth Proportional to 76,215.20, 105,175.60 and 42,223.57

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Solution

The fourth proportional to 76,215.20, 105,175.60 and 42,223.57 is: 58,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,215.20 : 105,175.60 = 42,223.57 : x
  2. Step 2: Convert to fraction form
    76,215.20/105,175.60 = 42,223.57/x
  3. Step 3: Cross multiply
    76,215.20x = 105,175.60 × 42,223.57
  4. Step 4: Simplify right side
    76,215.20x = 4,440,888,940.39
  5. Step 5: Solve for x
    x = 4,440,888,940.39/76,215.20
  6. Step 6: Final answer
    x = 58,267.76

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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.