Home / 66,106.32-91,138.68-47,940.72

Finding the Fourth Proportional to 66,106.32, 91,138.68 and 47,940.72

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Solution

The fourth proportional to 66,106.32, 91,138.68 and 47,940.72 is: 66,094.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,106.32 : 91,138.68 = 47,940.72 : x
  2. Step 2: Convert to fraction form
    66,106.32/91,138.68 = 47,940.72/x
  3. Step 3: Cross multiply
    66,106.32x = 91,138.68 × 47,940.72
  4. Step 4: Simplify right side
    66,106.32x = 4,369,253,939.05
  5. Step 5: Solve for x
    x = 4,369,253,939.05/66,106.32
  6. Step 6: Final answer
    x = 66,094.35

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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.