Home / 85,235,959.80-117,657,611.10-55,869,183.72

Finding the Fourth Proportional to 85,235,959.80, 117,657,611.10 and 55,869,183.72

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Solution

The fourth proportional to 85,235,959.80, 117,657,611.10 and 55,869,183.72 is: 77,120,439.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,235,959.80 : 117,657,611.10 = 55,869,183.72 : x
  2. Step 2: Convert to fraction form
    85,235,959.80/117,657,611.10 = 55,869,183.72/x
  3. Step 3: Cross multiply
    85,235,959.80x = 117,657,611.10 × 55,869,183.72
  4. Step 4: Simplify right side
    85,235,959.80x = 6,573,434,690,602,211
  5. Step 5: Solve for x
    x = 6,573,434,690,602,211/85,235,959.80
  6. Step 6: Final answer
    x = 77,120,439.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.