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Finding the Fourth Proportional to 85,634.73, 118,288.88 and 65,737.49

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Solution

The fourth proportional to 85,634.73, 118,288.88 and 65,737.49 is: 90,804.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,634.73 : 118,288.88 = 65,737.49 : x
  2. Step 2: Convert to fraction form
    85,634.73/118,288.88 = 65,737.49/x
  3. Step 3: Cross multiply
    85,634.73x = 118,288.88 × 65,737.49
  4. Step 4: Simplify right side
    85,634.73x = 7,776,013,145.98
  5. Step 5: Solve for x
    x = 7,776,013,145.98/85,634.73
  6. Step 6: Final answer
    x = 90,804.43

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1.5x scale

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.