Home / 76,778,796.75-105,955,444.52-43,738,556.20

Finding the Fourth Proportional to 76,778,796.75, 105,955,444.52 and 43,738,556.20

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Solution

The fourth proportional to 76,778,796.75, 105,955,444.52 and 43,738,556.20 is: 60,359,609.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,778,796.75 : 105,955,444.52 = 43,738,556.20 : x
  2. Step 2: Convert to fraction form
    76,778,796.75/105,955,444.52 = 43,738,556.20/x
  3. Step 3: Cross multiply
    76,778,796.75x = 105,955,444.52 × 43,738,556.20
  4. Step 4: Simplify right side
    76,778,796.75x = 4,634,338,164,678,459
  5. Step 5: Solve for x
    x = 4,634,338,164,678,459/76,778,796.75
  6. Step 6: Final answer
    x = 60,359,609.17

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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.