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Finding the Fourth Proportional to 64,873.70, 97,310.55 and 61,811.90

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Solution

The fourth proportional to 64,873.70, 97,310.55 and 61,811.90 is: 92,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,873.70 : 97,310.55 = 61,811.90 : x
  2. Step 2: Convert to fraction form
    64,873.70/97,310.55 = 61,811.90/x
  3. Step 3: Cross multiply
    64,873.70x = 97,310.55 × 61,811.90
  4. Step 4: Simplify right side
    64,873.70x = 6,014,949,985.55
  5. Step 5: Solve for x
    x = 6,014,949,985.55/64,873.70
  6. Step 6: Final answer
    x = 92,717.85

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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.