Home / 75,051.21-112,705.60-66,636.72

Finding the Fourth Proportional to 75,051.21, 112,705.60 and 66,636.72

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Solution

The fourth proportional to 75,051.21, 112,705.60 and 66,636.72 is: 100,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,051.21 : 112,705.60 = 66,636.72 : x
  2. Step 2: Convert to fraction form
    75,051.21/112,705.60 = 66,636.72/x
  3. Step 3: Cross multiply
    75,051.21x = 112,705.60 × 66,636.72
  4. Step 4: Simplify right side
    75,051.21x = 7,510,331,624.80
  5. Step 5: Solve for x
    x = 7,510,331,624.80/75,051.21
  6. Step 6: Final answer
    x = 100,069.43

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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.