Home / 76,143.75-105,126.03-48,930.87

Finding the Fourth Proportional to 76,143.75, 105,126.03 and 48,930.87

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Solution

The fourth proportional to 76,143.75, 105,126.03 and 48,930.87 is: 67,555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,143.75 : 105,126.03 = 48,930.87 : x
  2. Step 2: Convert to fraction form
    76,143.75/105,126.03 = 48,930.87/x
  3. Step 3: Cross multiply
    76,143.75x = 105,126.03 × 48,930.87
  4. Step 4: Simplify right side
    76,143.75x = 5,143,908,107.55
  5. Step 5: Solve for x
    x = 5,143,908,107.55/76,143.75
  6. Step 6: Final answer
    x = 67,555.22

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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.