Home / 81,652,849.40-122,353,302.90-70,819,326.20

Finding the Fourth Proportional to 81,652,849.40, 122,353,302.90 and 70,819,326.20

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Solution

The fourth proportional to 81,652,849.40, 122,353,302.90 and 70,819,326.20 is: 106,119,731.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,652,849.40 : 122,353,302.90 = 70,819,326.20 : x
  2. Step 2: Convert to fraction form
    81,652,849.40/122,353,302.90 = 70,819,326.20/x
  3. Step 3: Cross multiply
    81,652,849.40x = 122,353,302.90 × 70,819,326.20
  4. Step 4: Simplify right side
    81,652,849.40x = 8,664,978,469,722,507
  5. Step 5: Solve for x
    x = 8,664,978,469,722,507/81,652,849.40
  6. Step 6: Final answer
    x = 106,119,731.69

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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.