Home / 71,810.40-99,096.96-39,979.92

Finding the Fourth Proportional to 71,810.40, 99,096.96 and 39,979.92

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Solution

The fourth proportional to 71,810.40, 99,096.96 and 39,979.92 is: 55,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,810.40 : 99,096.96 = 39,979.92 : x
  2. Step 2: Convert to fraction form
    71,810.40/99,096.96 = 39,979.92/x
  3. Step 3: Cross multiply
    71,810.40x = 99,096.96 × 39,979.92
  4. Step 4: Simplify right side
    71,810.40x = 3,961,888,533.04
  5. Step 5: Solve for x
    x = 3,961,888,533.04/71,810.40
  6. Step 6: Final answer
    x = 55,171.51

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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.