Home / 75,272.32-112,899.80-19,872.64

Finding the Fourth Proportional to 75,272.32, 112,899.80 and 19,872.64

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Solution

The fourth proportional to 75,272.32, 112,899.80 and 19,872.64 is: 29,806.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,272.32 : 112,899.80 = 19,872.64 : x
  2. Step 2: Convert to fraction form
    75,272.32/112,899.80 = 19,872.64/x
  3. Step 3: Cross multiply
    75,272.32x = 112,899.80 × 19,872.64
  4. Step 4: Simplify right side
    75,272.32x = 2,243,617,081.47
  5. Step 5: Solve for x
    x = 2,243,617,081.47/75,272.32
  6. Step 6: Final answer
    x = 29,806.67

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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.