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Finding the Fourth Proportional to 75,672.55, 113,515.35 and 19,512.16

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Solution

The fourth proportional to 75,672.55, 113,515.35 and 19,512.16 is: 29,269.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,672.55 : 113,515.35 = 19,512.16 : x
  2. Step 2: Convert to fraction form
    75,672.55/113,515.35 = 19,512.16/x
  3. Step 3: Cross multiply
    75,672.55x = 113,515.35 × 19,512.16
  4. Step 4: Simplify right side
    75,672.55x = 2,214,929,671.66
  5. Step 5: Solve for x
    x = 2,214,929,671.66/75,672.55
  6. Step 6: Final answer
    x = 29,269.92

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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.