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Finding the Fourth Proportional to 108,585.60, 162,835.20 and 38,428.80

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Solution

The fourth proportional to 108,585.60, 162,835.20 and 38,428.80 is: 57,627.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,585.60 : 162,835.20 = 38,428.80 : x
  2. Step 2: Convert to fraction form
    108,585.60/162,835.20 = 38,428.80/x
  3. Step 3: Cross multiply
    108,585.60x = 162,835.20 × 38,428.80
  4. Step 4: Simplify right side
    108,585.60x = 6,257,561,333.76
  5. Step 5: Solve for x
    x = 6,257,561,333.76/108,585.60
  6. Step 6: Final answer
    x = 57,627.91

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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.