Home / 66,274,022.81-99,426,682.20-20,835,817.31

Finding the Fourth Proportional to 66,274,022.81, 99,426,682.20 and 20,835,817.31

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Solution

The fourth proportional to 66,274,022.81, 99,426,682.20 and 20,835,817.31 is: 31,258,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,274,022.81 : 99,426,682.20 = 20,835,817.31 : x
  2. Step 2: Convert to fraction form
    66,274,022.81/99,426,682.20 = 20,835,817.31/x
  3. Step 3: Cross multiply
    66,274,022.81x = 99,426,682.20 × 20,835,817.31
  4. Step 4: Simplify right side
    66,274,022.81x = 2,071,636,185,561,495.50
  5. Step 5: Solve for x
    x = 2,071,636,185,561,495.50/66,274,022.81
  6. Step 6: Final answer
    x = 31,258,645.51

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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.