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Finding the Fourth Proportional to 80,434.78, 110,877.21 and 63,408.58

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Solution

The fourth proportional to 80,434.78, 110,877.21 and 63,408.58 is: 87,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,434.78 : 110,877.21 = 63,408.58 : x
  2. Step 2: Convert to fraction form
    80,434.78/110,877.21 = 63,408.58/x
  3. Step 3: Cross multiply
    80,434.78x = 110,877.21 × 63,408.58
  4. Step 4: Simplify right side
    80,434.78x = 7,030,566,440.46
  5. Step 5: Solve for x
    x = 7,030,566,440.46/80,434.78
  6. Step 6: Final answer
    x = 87,407.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.