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Finding the Fourth Proportional to 57,125.90, 78,915.86 and 45,625.71

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Solution

The fourth proportional to 57,125.90, 78,915.86 and 45,625.71 is: 63,029.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,125.90 : 78,915.86 = 45,625.71 : x
  2. Step 2: Convert to fraction form
    57,125.90/78,915.86 = 45,625.71/x
  3. Step 3: Cross multiply
    57,125.90x = 78,915.86 × 45,625.71
  4. Step 4: Simplify right side
    57,125.90x = 3,600,591,914.63
  5. Step 5: Solve for x
    x = 3,600,591,914.63/57,125.90
  6. Step 6: Final answer
    x = 63,029.07

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.