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Finding the Fourth Proportional to 81,452.96, 112,393.68 and 45,640.16

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Solution

The fourth proportional to 81,452.96, 112,393.68 and 45,640.16 is: 62,977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,452.96 : 112,393.68 = 45,640.16 : x
  2. Step 2: Convert to fraction form
    81,452.96/112,393.68 = 45,640.16/x
  3. Step 3: Cross multiply
    81,452.96x = 112,393.68 × 45,640.16
  4. Step 4: Simplify right side
    81,452.96x = 5,129,665,538.19
  5. Step 5: Solve for x
    x = 5,129,665,538.19/81,452.96
  6. Step 6: Final answer
    x = 62,977.03

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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.