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Finding the Fourth Proportional to 81,849,807.70, 122,774,711.55 and 49,485,050.80

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Solution

The fourth proportional to 81,849,807.70, 122,774,711.55 and 49,485,050.80 is: 74,227,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,849,807.70 : 122,774,711.55 = 49,485,050.80 : x
  2. Step 2: Convert to fraction form
    81,849,807.70/122,774,711.55 = 49,485,050.80/x
  3. Step 3: Cross multiply
    81,849,807.70x = 122,774,711.55 × 49,485,050.80
  4. Step 4: Simplify right side
    81,849,807.70x = 6,075,512,838,007,096
  5. Step 5: Solve for x
    x = 6,075,512,838,007,096/81,849,807.70
  6. Step 6: Final answer
    x = 74,227,576.20

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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.