Home / 85,414,870.54-128,326,702.38-54,769,491.12

Finding the Fourth Proportional to 85,414,870.54, 128,326,702.38 and 54,769,491.12

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Solution

The fourth proportional to 85,414,870.54, 128,326,702.38 and 54,769,491.12 is: 82,285,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414,870.54 : 128,326,702.38 = 54,769,491.12 : x
  2. Step 2: Convert to fraction form
    85,414,870.54/128,326,702.38 = 54,769,491.12/x
  3. Step 3: Cross multiply
    85,414,870.54x = 128,326,702.38 × 54,769,491.12
  4. Step 4: Simplify right side
    85,414,870.54x = 7,028,388,186,736,132
  5. Step 5: Solve for x
    x = 7,028,388,186,736,132/85,414,870.54
  6. Step 6: Final answer
    x = 82,285,299.30

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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.