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Finding the Fourth Proportional to 91,285.12, 125,976.03 and 51,003.32

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Solution

The fourth proportional to 91,285.12, 125,976.03 and 51,003.32 is: 70,386.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,285.12 : 125,976.03 = 51,003.32 : x
  2. Step 2: Convert to fraction form
    91,285.12/125,976.03 = 51,003.32/x
  3. Step 3: Cross multiply
    91,285.12x = 125,976.03 × 51,003.32
  4. Step 4: Simplify right side
    91,285.12x = 6,425,195,140.54
  5. Step 5: Solve for x
    x = 6,425,195,140.54/91,285.12
  6. Step 6: Final answer
    x = 70,386.01

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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.