Home / 78,066,428.40-107,780,639.76-50,237,489.34

Finding the Fourth Proportional to 78,066,428.40, 107,780,639.76 and 50,237,489.34

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Solution

The fourth proportional to 78,066,428.40, 107,780,639.76 and 50,237,489.34 is: 69,359,247.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,066,428.40 : 107,780,639.76 = 50,237,489.34 : x
  2. Step 2: Convert to fraction form
    78,066,428.40/107,780,639.76 = 50,237,489.34/x
  3. Step 3: Cross multiply
    78,066,428.40x = 107,780,639.76 × 50,237,489.34
  4. Step 4: Simplify right side
    78,066,428.40x = 5,414,628,741,001,381
  5. Step 5: Solve for x
    x = 5,414,628,741,001,381/78,066,428.40
  6. Step 6: Final answer
    x = 69,359,247.66

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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.