Home / 85,333.28-127,815.04-61,908

Finding the Fourth Proportional to 85,333.28, 127,815.04 and 61,908

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Solution

The fourth proportional to 85,333.28, 127,815.04 and 61,908 is: 92,727.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,333.28 : 127,815.04 = 61,908 : x
  2. Step 2: Convert to fraction form
    85,333.28/127,815.04 = 61,908/x
  3. Step 3: Cross multiply
    85,333.28x = 127,815.04 × 61,908
  4. Step 4: Simplify right side
    85,333.28x = 7,912,773,496.32
  5. Step 5: Solve for x
    x = 7,912,773,496.32/85,333.28
  6. Step 6: Final answer
    x = 92,727.87

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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.