Home / 78,147,206.49-117,196,818.25-54,041,042.73

Finding the Fourth Proportional to 78,147,206.49, 117,196,818.25 and 54,041,042.73

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Solution

The fourth proportional to 78,147,206.49, 117,196,818.25 and 54,041,042.73 is: 81,044,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,147,206.49 : 117,196,818.25 = 54,041,042.73 : x
  2. Step 2: Convert to fraction form
    78,147,206.49/117,196,818.25 = 54,041,042.73/x
  3. Step 3: Cross multiply
    78,147,206.49x = 117,196,818.25 × 54,041,042.73
  4. Step 4: Simplify right side
    78,147,206.49x = 6,333,438,262,868,293
  5. Step 5: Solve for x
    x = 6,333,438,262,868,293/78,147,206.49
  6. Step 6: Final answer
    x = 81,044,973.29

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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.