Home / 51,221,123.91-76,831,817.09-20,928,986.91

Finding the Fourth Proportional to 51,221,123.91, 76,831,817.09 and 20,928,986.91

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Solution

The fourth proportional to 51,221,123.91, 76,831,817.09 and 20,928,986.91 is: 31,393,533.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,221,123.91 : 76,831,817.09 = 20,928,986.91 : x
  2. Step 2: Convert to fraction form
    51,221,123.91/76,831,817.09 = 20,928,986.91/x
  3. Step 3: Cross multiply
    51,221,123.91x = 76,831,817.09 × 20,928,986.91
  4. Step 4: Simplify right side
    51,221,123.91x = 1,608,012,094,043,479.25
  5. Step 5: Solve for x
    x = 1,608,012,094,043,479.25/51,221,123.91
  6. Step 6: Final answer
    x = 31,393,533.98

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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.