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Finding the Fourth Proportional to 91,835.70, 126,746.06 and 51,009

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Solution

The fourth proportional to 91,835.70, 126,746.06 and 51,009 is: 70,399.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,835.70 : 126,746.06 = 51,009 : x
  2. Step 2: Convert to fraction form
    91,835.70/126,746.06 = 51,009/x
  3. Step 3: Cross multiply
    91,835.70x = 126,746.06 × 51,009
  4. Step 4: Simplify right side
    91,835.70x = 6,465,189,519.50
  5. Step 5: Solve for x
    x = 6,465,189,519.50/91,835.70
  6. Step 6: Final answer
    x = 70,399.52

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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.