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Finding the Fourth Proportional to 70,170, 96,913.08 and 54,445.20

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Solution

The fourth proportional to 70,170, 96,913.08 and 54,445.20 is: 75,195.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,170 : 96,913.08 = 54,445.20 : x
  2. Step 2: Convert to fraction form
    70,170/96,913.08 = 54,445.20/x
  3. Step 3: Cross multiply
    70,170x = 96,913.08 × 54,445.20
  4. Step 4: Simplify right side
    70,170x = 5,276,452,023.22
  5. Step 5: Solve for x
    x = 5,276,452,023.22/70,170
  6. Step 6: Final answer
    x = 75,195.27

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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.