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Finding the Fourth Proportional to 64,874.40, 97,311.60 and 36,783.60

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Solution

The fourth proportional to 64,874.40, 97,311.60 and 36,783.60 is: 55,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,874.40 : 97,311.60 = 36,783.60 : x
  2. Step 2: Convert to fraction form
    64,874.40/97,311.60 = 36,783.60/x
  3. Step 3: Cross multiply
    64,874.40x = 97,311.60 × 36,783.60
  4. Step 4: Simplify right side
    64,874.40x = 3,579,470,969.76
  5. Step 5: Solve for x
    x = 3,579,470,969.76/64,874.40
  6. Step 6: Final answer
    x = 55,175.40

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1.5x scale

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.