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Finding the Fourth Proportional to 65,367,858.40, 97,874,840.40 and 51,212,082.40

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Solution

The fourth proportional to 65,367,858.40, 97,874,840.40 and 51,212,082.40 is: 76,679,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,367,858.40 : 97,874,840.40 = 51,212,082.40 : x
  2. Step 2: Convert to fraction form
    65,367,858.40/97,874,840.40 = 51,212,082.40/x
  3. Step 3: Cross multiply
    65,367,858.40x = 97,874,840.40 × 51,212,082.40
  4. Step 4: Simplify right side
    65,367,858.40x = 5,012,374,391,451,649
  5. Step 5: Solve for x
    x = 5,012,374,391,451,649/65,367,858.40
  6. Step 6: Final answer
    x = 76,679,495.31

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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.