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Finding the Fourth Proportional to 43,211.60, 64,817.40 and 25,672.40

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Solution

The fourth proportional to 43,211.60, 64,817.40 and 25,672.40 is: 38,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,211.60 : 64,817.40 = 25,672.40 : x
  2. Step 2: Convert to fraction form
    43,211.60/64,817.40 = 25,672.40/x
  3. Step 3: Cross multiply
    43,211.60x = 64,817.40 × 25,672.40
  4. Step 4: Simplify right side
    43,211.60x = 1,664,018,219.76
  5. Step 5: Solve for x
    x = 1,664,018,219.76/43,211.60
  6. Step 6: Final answer
    x = 38,508.60

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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.