Home / 86,066.67-128,954.40-52,717.17

Finding the Fourth Proportional to 86,066.67, 128,954.40 and 52,717.17

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Solution

The fourth proportional to 86,066.67, 128,954.40 and 52,717.17 is: 78,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,066.67 : 128,954.40 = 52,717.17 : x
  2. Step 2: Convert to fraction form
    86,066.67/128,954.40 = 52,717.17/x
  3. Step 3: Cross multiply
    86,066.67x = 128,954.40 × 52,717.17
  4. Step 4: Simplify right side
    86,066.67x = 6,798,111,027.05
  5. Step 5: Solve for x
    x = 6,798,111,027.05/86,066.67
  6. Step 6: Final answer
    x = 78,986.57

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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.