Home / 85,696,365.81-128,418,544.71-50,645,404.29

Finding the Fourth Proportional to 85,696,365.81, 128,418,544.71 and 50,645,404.29

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Solution

The fourth proportional to 85,696,365.81, 128,418,544.71 and 50,645,404.29 is: 75,893,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,696,365.81 : 128,418,544.71 = 50,645,404.29 : x
  2. Step 2: Convert to fraction form
    85,696,365.81/128,418,544.71 = 50,645,404.29/x
  3. Step 3: Cross multiply
    85,696,365.81x = 128,418,544.71 × 50,645,404.29
  4. Step 4: Simplify right side
    85,696,365.81x = 6,503,809,115,171,390
  5. Step 5: Solve for x
    x = 6,503,809,115,171,390/85,696,365.81
  6. Step 6: Final answer
    x = 75,893,639.76

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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.