Home / 71,807.38-99,091.44-39,975.58

Finding the Fourth Proportional to 71,807.38, 99,091.44 and 39,975.58

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Solution

The fourth proportional to 71,807.38, 99,091.44 and 39,975.58 is: 55,164.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,807.38 : 99,091.44 = 39,975.58 : x
  2. Step 2: Convert to fraction form
    71,807.38/99,091.44 = 39,975.58/x
  3. Step 3: Cross multiply
    71,807.38x = 99,091.44 × 39,975.58
  4. Step 4: Simplify right side
    71,807.38x = 3,961,237,787.04
  5. Step 5: Solve for x
    x = 3,961,237,787.04/71,807.38
  6. Step 6: Final answer
    x = 55,164.77

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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.