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Finding the Fourth Proportional to 65,491.50, 90,392.85 and 41,613.51

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Solution

The fourth proportional to 65,491.50, 90,392.85 and 41,613.51 is: 57,435.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,491.50 : 90,392.85 = 41,613.51 : x
  2. Step 2: Convert to fraction form
    65,491.50/90,392.85 = 41,613.51/x
  3. Step 3: Cross multiply
    65,491.50x = 90,392.85 × 41,613.51
  4. Step 4: Simplify right side
    65,491.50x = 3,761,563,767.40
  5. Step 5: Solve for x
    x = 3,761,563,767.40/65,491.50
  6. Step 6: Final answer
    x = 57,435.91

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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.