Home / 76,890.64-106,119.68-45,072.24

Finding the Fourth Proportional to 76,890.64, 106,119.68 and 45,072.24

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Solution

The fourth proportional to 76,890.64, 106,119.68 and 45,072.24 is: 62,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.64 : 106,119.68 = 45,072.24 : x
  2. Step 2: Convert to fraction form
    76,890.64/106,119.68 = 45,072.24/x
  3. Step 3: Cross multiply
    76,890.64x = 106,119.68 × 45,072.24
  4. Step 4: Simplify right side
    76,890.64x = 4,783,051,685.68
  5. Step 5: Solve for x
    x = 4,783,051,685.68/76,890.64
  6. Step 6: Final answer
    x = 62,205.90

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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.