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Finding the Fourth Proportional to 57,615.60, 86,423.40 and 45,951.60

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Solution

The fourth proportional to 57,615.60, 86,423.40 and 45,951.60 is: 68,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,615.60 : 86,423.40 = 45,951.60 : x
  2. Step 2: Convert to fraction form
    57,615.60/86,423.40 = 45,951.60/x
  3. Step 3: Cross multiply
    57,615.60x = 86,423.40 × 45,951.60
  4. Step 4: Simplify right side
    57,615.60x = 3,971,293,507.44
  5. Step 5: Solve for x
    x = 3,971,293,507.44/57,615.60
  6. Step 6: Final answer
    x = 68,927.40

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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.