Home / 85,638,291.60-128,420,112.60-34,503,315.60

Finding the Fourth Proportional to 85,638,291.60, 128,420,112.60 and 34,503,315.60

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Solution

The fourth proportional to 85,638,291.60, 128,420,112.60 and 34,503,315.60 is: 51,739,935.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,638,291.60 : 128,420,112.60 = 34,503,315.60 : x
  2. Step 2: Convert to fraction form
    85,638,291.60/128,420,112.60 = 34,503,315.60/x
  3. Step 3: Cross multiply
    85,638,291.60x = 128,420,112.60 × 34,503,315.60
  4. Step 4: Simplify right side
    85,638,291.60x = 4,430,919,674,425,336.50
  5. Step 5: Solve for x
    x = 4,430,919,674,425,336.50/85,638,291.60
  6. Step 6: Final answer
    x = 51,739,935.39

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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.