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Finding the Fourth Proportional to 81,612.62, 112,627.43 and 45,805.36

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Solution

The fourth proportional to 81,612.62, 112,627.43 and 45,805.36 is: 63,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,612.62 : 112,627.43 = 45,805.36 : x
  2. Step 2: Convert to fraction form
    81,612.62/112,627.43 = 45,805.36/x
  3. Step 3: Cross multiply
    81,612.62x = 112,627.43 × 45,805.36
  4. Step 4: Simplify right side
    81,612.62x = 5,158,939,977.02
  5. Step 5: Solve for x
    x = 5,158,939,977.02/81,612.62
  6. Step 6: Final answer
    x = 63,212.53

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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.