Home / 63,431.20-95,031.60-51,680.80

Finding the Fourth Proportional to 63,431.20, 95,031.60 and 51,680.80

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Solution

The fourth proportional to 63,431.20, 95,031.60 and 51,680.80 is: 77,427.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,431.20 : 95,031.60 = 51,680.80 : x
  2. Step 2: Convert to fraction form
    63,431.20/95,031.60 = 51,680.80/x
  3. Step 3: Cross multiply
    63,431.20x = 95,031.60 × 51,680.80
  4. Step 4: Simplify right side
    63,431.20x = 4,911,309,113.28
  5. Step 5: Solve for x
    x = 4,911,309,113.28/63,431.20
  6. Step 6: Final answer
    x = 77,427.34

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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.