Home / 81,338,783.51-112,206,016.36-51,939,204.95

Finding the Fourth Proportional to 81,338,783.51, 112,206,016.36 and 51,939,204.95

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Solution

The fourth proportional to 81,338,783.51, 112,206,016.36 and 51,939,204.95 is: 71,649,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,338,783.51 : 112,206,016.36 = 51,939,204.95 : x
  2. Step 2: Convert to fraction form
    81,338,783.51/112,206,016.36 = 51,939,204.95/x
  3. Step 3: Cross multiply
    81,338,783.51x = 112,206,016.36 × 51,939,204.95
  4. Step 4: Simplify right side
    81,338,783.51x = 5,827,891,280,690,532
  5. Step 5: Solve for x
    x = 5,827,891,280,690,532/81,338,783.51
  6. Step 6: Final answer
    x = 71,649,599.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.