Home / 47,872.40-66,073.08-31,711.28

Finding the Fourth Proportional to 47,872.40, 66,073.08 and 31,711.28

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Solution

The fourth proportional to 47,872.40, 66,073.08 and 31,711.28 is: 43,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,872.40 : 66,073.08 = 31,711.28 : x
  2. Step 2: Convert to fraction form
    47,872.40/66,073.08 = 31,711.28/x
  3. Step 3: Cross multiply
    47,872.40x = 66,073.08 × 31,711.28
  4. Step 4: Simplify right side
    47,872.40x = 2,095,261,940.34
  5. Step 5: Solve for x
    x = 2,095,261,940.34/47,872.40
  6. Step 6: Final answer
    x = 43,767.64

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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.