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Finding the Fourth Proportional to 40,903.20, 61,354.80 and 40,611.60

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Solution

The fourth proportional to 40,903.20, 61,354.80 and 40,611.60 is: 60,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,903.20 : 61,354.80 = 40,611.60 : x
  2. Step 2: Convert to fraction form
    40,903.20/61,354.80 = 40,611.60/x
  3. Step 3: Cross multiply
    40,903.20x = 61,354.80 × 40,611.60
  4. Step 4: Simplify right side
    40,903.20x = 2,491,716,595.68
  5. Step 5: Solve for x
    x = 2,491,716,595.68/40,903.20
  6. Step 6: Final answer
    x = 60,917.40

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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.