Home / 81,973,018.38-122,883,859.79-40,996,800.75

Finding the Fourth Proportional to 81,973,018.38, 122,883,859.79 and 40,996,800.75

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Solution

The fourth proportional to 81,973,018.38, 122,883,859.79 and 40,996,800.75 is: 61,457,357.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,973,018.38 : 122,883,859.79 = 40,996,800.75 : x
  2. Step 2: Convert to fraction form
    81,973,018.38/122,883,859.79 = 40,996,800.75/x
  3. Step 3: Cross multiply
    81,973,018.38x = 122,883,859.79 × 40,996,800.75
  4. Step 4: Simplify right side
    81,973,018.38x = 5,037,845,115,201,567
  5. Step 5: Solve for x
    x = 5,037,845,115,201,567/81,973,018.38
  6. Step 6: Final answer
    x = 61,457,357.74

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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.