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Finding the Fourth Proportional to 108,515.80, 162,822.30 and 38,445.40

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Solution

The fourth proportional to 108,515.80, 162,822.30 and 38,445.40 is: 57,685.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,515.80 : 162,822.30 = 38,445.40 : x
  2. Step 2: Convert to fraction form
    108,515.80/162,822.30 = 38,445.40/x
  3. Step 3: Cross multiply
    108,515.80x = 162,822.30 × 38,445.40
  4. Step 4: Simplify right side
    108,515.80x = 6,259,768,452.42
  5. Step 5: Solve for x
    x = 6,259,768,452.42/108,515.80
  6. Step 6: Final answer
    x = 57,685.32

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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.