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Finding the Fourth Proportional to 64,850.40, 97,056.90 and 56,977.20

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Solution

The fourth proportional to 64,850.40, 97,056.90 and 56,977.20 is: 85,273.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,850.40 : 97,056.90 = 56,977.20 : x
  2. Step 2: Convert to fraction form
    64,850.40/97,056.90 = 56,977.20/x
  3. Step 3: Cross multiply
    64,850.40x = 97,056.90 × 56,977.20
  4. Step 4: Simplify right side
    64,850.40x = 5,530,030,402.68
  5. Step 5: Solve for x
    x = 5,530,030,402.68/64,850.40
  6. Step 6: Final answer
    x = 85,273.65

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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.