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Finding the Fourth Proportional to 65,743.48, 90,646.62 and 45,617.56

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Solution

The fourth proportional to 65,743.48, 90,646.62 and 45,617.56 is: 62,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,743.48 : 90,646.62 = 45,617.56 : x
  2. Step 2: Convert to fraction form
    65,743.48/90,646.62 = 45,617.56/x
  3. Step 3: Cross multiply
    65,743.48x = 90,646.62 × 45,617.56
  4. Step 4: Simplify right side
    65,743.48x = 4,135,077,626.65
  5. Step 5: Solve for x
    x = 4,135,077,626.65/65,743.48
  6. Step 6: Final answer
    x = 62,897.15

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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.