Home / 71,128.66-106,693.07-18,538.10

Finding the Fourth Proportional to 71,128.66, 106,693.07 and 18,538.10

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Solution

The fourth proportional to 71,128.66, 106,693.07 and 18,538.10 is: 27,807.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,128.66 : 106,693.07 = 18,538.10 : x
  2. Step 2: Convert to fraction form
    71,128.66/106,693.07 = 18,538.10/x
  3. Step 3: Cross multiply
    71,128.66x = 106,693.07 × 18,538.10
  4. Step 4: Simplify right side
    71,128.66x = 1,977,886,800.97
  5. Step 5: Solve for x
    x = 1,977,886,800.97/71,128.66
  6. Step 6: Final answer
    x = 27,807.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.