Home / 65,178.20-89,945.90-35,370.20

Finding the Fourth Proportional to 65,178.20, 89,945.90 and 35,370.20

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Solution

The fourth proportional to 65,178.20, 89,945.90 and 35,370.20 is: 48,810.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,178.20 : 89,945.90 = 35,370.20 : x
  2. Step 2: Convert to fraction form
    65,178.20/89,945.90 = 35,370.20/x
  3. Step 3: Cross multiply
    65,178.20x = 89,945.90 × 35,370.20
  4. Step 4: Simplify right side
    65,178.20x = 3,181,403,845.60
  5. Step 5: Solve for x
    x = 3,181,403,845.60/65,178.20
  6. Step 6: Final answer
    x = 48,810.86

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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.