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Finding the Fourth Proportional to 85,661.95, 118,267.11 and 55,047.46

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Solution

The fourth proportional to 85,661.95, 118,267.11 and 55,047.46 is: 75,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,661.95 : 118,267.11 = 55,047.46 : x
  2. Step 2: Convert to fraction form
    85,661.95/118,267.11 = 55,047.46/x
  3. Step 3: Cross multiply
    85,661.95x = 118,267.11 × 55,047.46
  4. Step 4: Simplify right side
    85,661.95x = 6,510,304,221.80
  5. Step 5: Solve for x
    x = 6,510,304,221.80/85,661.95
  6. Step 6: Final answer
    x = 75,999.95

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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.