Home / 78,245,366.40-117,368,049.60-51,035,587.20

Finding the Fourth Proportional to 78,245,366.40, 117,368,049.60 and 51,035,587.20

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Solution

The fourth proportional to 78,245,366.40, 117,368,049.60 and 51,035,587.20 is: 76,553,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245,366.40 : 117,368,049.60 = 51,035,587.20 : x
  2. Step 2: Convert to fraction form
    78,245,366.40/117,368,049.60 = 51,035,587.20/x
  3. Step 3: Cross multiply
    78,245,366.40x = 117,368,049.60 × 51,035,587.20
  4. Step 4: Simplify right side
    78,245,366.40x = 5,989,947,329,854,725
  5. Step 5: Solve for x
    x = 5,989,947,329,854,725/78,245,366.40
  6. Step 6: Final answer
    x = 76,553,380.80

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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.