Home / 69,679,847.46-104,513,017.45-21,158,127.78

Finding the Fourth Proportional to 69,679,847.46, 104,513,017.45 and 21,158,127.78

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Solution

The fourth proportional to 69,679,847.46, 104,513,017.45 and 21,158,127.78 is: 31,735,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,847.46 : 104,513,017.45 = 21,158,127.78 : x
  2. Step 2: Convert to fraction form
    69,679,847.46/104,513,017.45 = 21,158,127.78/x
  3. Step 3: Cross multiply
    69,679,847.46x = 104,513,017.45 × 21,158,127.78
  4. Step 4: Simplify right side
    69,679,847.46x = 2,211,299,777,880,470
  5. Step 5: Solve for x
    x = 2,211,299,777,880,470/69,679,847.46
  6. Step 6: Final answer
    x = 31,735,140.91

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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.