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Finding the Fourth Proportional to 59,638.60, 89,433.60 and 20,175.40

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Solution

The fourth proportional to 59,638.60, 89,433.60 and 20,175.40 is: 30,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,638.60 : 89,433.60 = 20,175.40 : x
  2. Step 2: Convert to fraction form
    59,638.60/89,433.60 = 20,175.40/x
  3. Step 3: Cross multiply
    59,638.60x = 89,433.60 × 20,175.40
  4. Step 4: Simplify right side
    59,638.60x = 1,804,358,653.44
  5. Step 5: Solve for x
    x = 1,804,358,653.44/59,638.60
  6. Step 6: Final answer
    x = 30,254.88

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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.