Home / 84,515,920.40-126,773,880.60-65,360,424.80

Finding the Fourth Proportional to 84,515,920.40, 126,773,880.60 and 65,360,424.80

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Solution

The fourth proportional to 84,515,920.40, 126,773,880.60 and 65,360,424.80 is: 98,040,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,515,920.40 : 126,773,880.60 = 65,360,424.80 : x
  2. Step 2: Convert to fraction form
    84,515,920.40/126,773,880.60 = 65,360,424.80/x
  3. Step 3: Cross multiply
    84,515,920.40x = 126,773,880.60 × 65,360,424.80
  4. Step 4: Simplify right side
    84,515,920.40x = 8,285,994,689,560,478
  5. Step 5: Solve for x
    x = 8,285,994,689,560,478/84,515,920.40
  6. Step 6: Final answer
    x = 98,040,637.20

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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.