Home / 78,004,013.70-117,006,020.55-55,329,197.70

Finding the Fourth Proportional to 78,004,013.70, 117,006,020.55 and 55,329,197.70

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Solution

The fourth proportional to 78,004,013.70, 117,006,020.55 and 55,329,197.70 is: 82,993,796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004,013.70 : 117,006,020.55 = 55,329,197.70 : x
  2. Step 2: Convert to fraction form
    78,004,013.70/117,006,020.55 = 55,329,197.70/x
  3. Step 3: Cross multiply
    78,004,013.70x = 117,006,020.55 × 55,329,197.70
  4. Step 4: Simplify right side
    78,004,013.70x = 6,473,849,243,101,213
  5. Step 5: Solve for x
    x = 6,473,849,243,101,213/78,004,013.70
  6. Step 6: Final answer
    x = 82,993,796.55

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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.