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Finding the Fourth Proportional to 65,945.90, 91,009.80 and 37,255.61

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Solution

The fourth proportional to 65,945.90, 91,009.80 and 37,255.61 is: 51,415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,945.90 : 91,009.80 = 37,255.61 : x
  2. Step 2: Convert to fraction form
    65,945.90/91,009.80 = 37,255.61/x
  3. Step 3: Cross multiply
    65,945.90x = 91,009.80 × 37,255.61
  4. Step 4: Simplify right side
    65,945.90x = 3,390,625,614.98
  5. Step 5: Solve for x
    x = 3,390,625,614.98/65,945.90
  6. Step 6: Final answer
    x = 51,415.26

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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.