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Finding the Fourth Proportional to 91,094.58, 125,769 and 57,149.58

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Solution

The fourth proportional to 91,094.58, 125,769 and 57,149.58 is: 78,903.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,094.58 : 125,769 = 57,149.58 : x
  2. Step 2: Convert to fraction form
    91,094.58/125,769 = 57,149.58/x
  3. Step 3: Cross multiply
    91,094.58x = 125,769 × 57,149.58
  4. Step 4: Simplify right side
    91,094.58x = 7,187,645,527.02
  5. Step 5: Solve for x
    x = 7,187,645,527.02/91,094.58
  6. Step 6: Final answer
    x = 78,903.11

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1.5x scale

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.