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Finding the Fourth Proportional to 57,956.70, 86,913.45 and 40,374.30

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Solution

The fourth proportional to 57,956.70, 86,913.45 and 40,374.30 is: 60,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,956.70 : 86,913.45 = 40,374.30 : x
  2. Step 2: Convert to fraction form
    57,956.70/86,913.45 = 40,374.30/x
  3. Step 3: Cross multiply
    57,956.70x = 86,913.45 × 40,374.30
  4. Step 4: Simplify right side
    57,956.70x = 3,509,069,704.34
  5. Step 5: Solve for x
    x = 3,509,069,704.34/57,956.70
  6. Step 6: Final answer
    x = 60,546.40

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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.