Home / 78,003,359.70-117,005,039.55-55,328,543.70

Finding the Fourth Proportional to 78,003,359.70, 117,005,039.55 and 55,328,543.70

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Solution

The fourth proportional to 78,003,359.70, 117,005,039.55 and 55,328,543.70 is: 82,992,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,359.70 : 117,005,039.55 = 55,328,543.70 : x
  2. Step 2: Convert to fraction form
    78,003,359.70/117,005,039.55 = 55,328,543.70/x
  3. Step 3: Cross multiply
    78,003,359.70x = 117,005,039.55 × 55,328,543.70
  4. Step 4: Simplify right side
    78,003,359.70x = 6,473,718,443,862,404
  5. Step 5: Solve for x
    x = 6,473,718,443,862,404/78,003,359.70
  6. Step 6: Final answer
    x = 82,992,815.55

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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.