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Finding the Fourth Proportional to 66,885.60, 100,328.40 and 44,709.60

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Solution

The fourth proportional to 66,885.60, 100,328.40 and 44,709.60 is: 67,064.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,885.60 : 100,328.40 = 44,709.60 : x
  2. Step 2: Convert to fraction form
    66,885.60/100,328.40 = 44,709.60/x
  3. Step 3: Cross multiply
    66,885.60x = 100,328.40 × 44,709.60
  4. Step 4: Simplify right side
    66,885.60x = 4,485,642,632.64
  5. Step 5: Solve for x
    x = 4,485,642,632.64/66,885.60
  6. Step 6: Final answer
    x = 67,064.40

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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.