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Finding the Fourth Proportional to 64,878.21, 97,391.12 and 43,546.77

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Solution

The fourth proportional to 64,878.21, 97,391.12 and 43,546.77 is: 65,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.21 : 97,391.12 = 43,546.77 : x
  2. Step 2: Convert to fraction form
    64,878.21/97,391.12 = 43,546.77/x
  3. Step 3: Cross multiply
    64,878.21x = 97,391.12 × 43,546.77
  4. Step 4: Simplify right side
    64,878.21x = 4,241,068,484.95
  5. Step 5: Solve for x
    x = 4,241,068,484.95/64,878.21
  6. Step 6: Final answer
    x = 65,369.69

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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.