Home / 88,712.96-122,113.14-77,362.43

Finding the Fourth Proportional to 88,712.96, 122,113.14 and 77,362.43

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Solution

The fourth proportional to 88,712.96, 122,113.14 and 77,362.43 is: 106,489.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,712.96 : 122,113.14 = 77,362.43 : x
  2. Step 2: Convert to fraction form
    88,712.96/122,113.14 = 77,362.43/x
  3. Step 3: Cross multiply
    88,712.96x = 122,113.14 × 77,362.43
  4. Step 4: Simplify right side
    88,712.96x = 9,446,969,023.01
  5. Step 5: Solve for x
    x = 9,446,969,023.01/88,712.96
  6. Step 6: Final answer
    x = 106,489.17

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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.