Home / 78,147,205.49-117,196,816.75-54,041,041.73

Finding the Fourth Proportional to 78,147,205.49, 117,196,816.75 and 54,041,041.73

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Solution

The fourth proportional to 78,147,205.49, 117,196,816.75 and 54,041,041.73 is: 81,044,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,147,205.49 : 117,196,816.75 = 54,041,041.73 : x
  2. Step 2: Convert to fraction form
    78,147,205.49/117,196,816.75 = 54,041,041.73/x
  3. Step 3: Cross multiply
    78,147,205.49x = 117,196,816.75 × 54,041,041.73
  4. Step 4: Simplify right side
    78,147,205.49x = 6,333,438,064,609,913
  5. Step 5: Solve for x
    x = 6,333,438,064,609,913/78,147,205.49
  6. Step 6: Final answer
    x = 81,044,971.79

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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.