Home / 66,066.03-99,103.91-19,318.50

Finding the Fourth Proportional to 66,066.03, 99,103.91 and 19,318.50

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Solution

The fourth proportional to 66,066.03, 99,103.91 and 19,318.50 is: 28,979.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,066.03 : 99,103.91 = 19,318.50 : x
  2. Step 2: Convert to fraction form
    66,066.03/99,103.91 = 19,318.50/x
  3. Step 3: Cross multiply
    66,066.03x = 99,103.91 × 19,318.50
  4. Step 4: Simplify right side
    66,066.03x = 1,914,538,788.74
  5. Step 5: Solve for x
    x = 1,914,538,788.74/66,066.03
  6. Step 6: Final answer
    x = 28,979.17

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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.