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Finding the Fourth Proportional to 91,294.56, 125,980.40 and 51,548

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Solution

The fourth proportional to 91,294.56, 125,980.40 and 51,548 is: 71,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,294.56 : 125,980.40 = 51,548 : x
  2. Step 2: Convert to fraction form
    91,294.56/125,980.40 = 51,548/x
  3. Step 3: Cross multiply
    91,294.56x = 125,980.40 × 51,548
  4. Step 4: Simplify right side
    91,294.56x = 6,494,037,659.20
  5. Step 5: Solve for x
    x = 6,494,037,659.20/91,294.56
  6. Step 6: Final answer
    x = 71,132.80

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Why These Related Problems?

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