Home / 66,066.96-99,109.26-19,319.16

Finding the Fourth Proportional to 66,066.96, 99,109.26 and 19,319.16

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Solution

The fourth proportional to 66,066.96, 99,109.26 and 19,319.16 is: 28,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,066.96 : 99,109.26 = 19,319.16 : x
  2. Step 2: Convert to fraction form
    66,066.96/99,109.26 = 19,319.16/x
  3. Step 3: Cross multiply
    66,066.96x = 99,109.26 × 19,319.16
  4. Step 4: Simplify right side
    66,066.96x = 1,914,707,651.42
  5. Step 5: Solve for x
    x = 1,914,707,651.42/66,066.96
  6. Step 6: Final answer
    x = 28,981.32

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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.