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Finding the Fourth Proportional to 69,353.80, 104,030.70 and 61,318.60

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Solution

The fourth proportional to 69,353.80, 104,030.70 and 61,318.60 is: 91,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,353.80 : 104,030.70 = 61,318.60 : x
  2. Step 2: Convert to fraction form
    69,353.80/104,030.70 = 61,318.60/x
  3. Step 3: Cross multiply
    69,353.80x = 104,030.70 × 61,318.60
  4. Step 4: Simplify right side
    69,353.80x = 6,379,016,881.02
  5. Step 5: Solve for x
    x = 6,379,016,881.02/69,353.80
  6. Step 6: Final answer
    x = 91,977.90

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1.5x scale

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.