Home / 78,003,429.70-117,005,144.55-55,328,613.70

Finding the Fourth Proportional to 78,003,429.70, 117,005,144.55 and 55,328,613.70

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Solution

The fourth proportional to 78,003,429.70, 117,005,144.55 and 55,328,613.70 is: 82,992,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,429.70 : 117,005,144.55 = 55,328,613.70 : x
  2. Step 2: Convert to fraction form
    78,003,429.70/117,005,144.55 = 55,328,613.70/x
  3. Step 3: Cross multiply
    78,003,429.70x = 117,005,144.55 × 55,328,613.70
  4. Step 4: Simplify right side
    78,003,429.70x = 6,473,732,443,719,611
  5. Step 5: Solve for x
    x = 6,473,732,443,719,611/78,003,429.70
  6. Step 6: Final answer
    x = 82,992,920.55

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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.