Home / 51,221,122.79-76,831,815.40-20,928,985.79

Finding the Fourth Proportional to 51,221,122.79, 76,831,815.40 and 20,928,985.79

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Solution

The fourth proportional to 51,221,122.79, 76,831,815.40 and 20,928,985.79 is: 31,393,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,221,122.79 : 76,831,815.40 = 20,928,985.79 : x
  2. Step 2: Convert to fraction form
    51,221,122.79/76,831,815.40 = 20,928,985.79/x
  3. Step 3: Cross multiply
    51,221,122.79x = 76,831,815.40 × 20,928,985.79
  4. Step 4: Simplify right side
    51,221,122.79x = 1,608,011,972,726,503.25
  5. Step 5: Solve for x
    x = 1,608,011,972,726,503.25/51,221,122.79
  6. Step 6: Final answer
    x = 31,393,532.30

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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.