Home / 81,077,399.94-121,810,116.96-51,988,231.20

Finding the Fourth Proportional to 81,077,399.94, 121,810,116.96 and 51,988,231.20

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Solution

The fourth proportional to 81,077,399.94, 121,810,116.96 and 51,988,231.20 is: 78,106,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,077,399.94 : 121,810,116.96 = 51,988,231.20 : x
  2. Step 2: Convert to fraction form
    81,077,399.94/121,810,116.96 = 51,988,231.20/x
  3. Step 3: Cross multiply
    81,077,399.94x = 121,810,116.96 × 51,988,231.20
  4. Step 4: Simplify right side
    81,077,399.94x = 6,332,692,523,015,521
  5. Step 5: Solve for x
    x = 6,332,692,523,015,521/81,077,399.94
  6. Step 6: Final answer
    x = 78,106,753.89

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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.