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Finding the Fourth Proportional to 88,170, 121,674.57 and 47,883.77

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Solution

The fourth proportional to 88,170, 121,674.57 and 47,883.77 is: 66,079.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,170 : 121,674.57 = 47,883.77 : x
  2. Step 2: Convert to fraction form
    88,170/121,674.57 = 47,883.77/x
  3. Step 3: Cross multiply
    88,170x = 121,674.57 × 47,883.77
  4. Step 4: Simplify right side
    88,170x = 5,826,237,428.92
  5. Step 5: Solve for x
    x = 5,826,237,428.92/88,170
  6. Step 6: Final answer
    x = 66,079.59

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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.