Home / 69,146,411.40-103,724,865.90-20,620,477.80

Finding the Fourth Proportional to 69,146,411.40, 103,724,865.90 and 20,620,477.80

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Solution

The fourth proportional to 69,146,411.40, 103,724,865.90 and 20,620,477.80 is: 30,932,281.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,146,411.40 : 103,724,865.90 = 20,620,477.80 : x
  2. Step 2: Convert to fraction form
    69,146,411.40/103,724,865.90 = 20,620,477.80/x
  3. Step 3: Cross multiply
    69,146,411.40x = 103,724,865.90 × 20,620,477.80
  4. Step 4: Simplify right side
    69,146,411.40x = 2,138,856,294,598,927.25
  5. Step 5: Solve for x
    x = 2,138,856,294,598,927.25/69,146,411.40
  6. Step 6: Final answer
    x = 30,932,281.97

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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.