Home / 85,414,870.67-128,326,702.58-54,769,491.25

Finding the Fourth Proportional to 85,414,870.67, 128,326,702.58 and 54,769,491.25

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Solution

The fourth proportional to 85,414,870.67, 128,326,702.58 and 54,769,491.25 is: 82,285,299.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414,870.67 : 128,326,702.58 = 54,769,491.25 : x
  2. Step 2: Convert to fraction form
    85,414,870.67/128,326,702.58 = 54,769,491.25/x
  3. Step 3: Cross multiply
    85,414,870.67x = 128,326,702.58 × 54,769,491.25
  4. Step 4: Simplify right side
    85,414,870.67x = 7,028,388,214,068,239
  5. Step 5: Solve for x
    x = 7,028,388,214,068,239/85,414,870.67
  6. Step 6: Final answer
    x = 82,285,299.49

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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.