Home / 81,627.55-112,645.08-45,816.64

Finding the Fourth Proportional to 81,627.55, 112,645.08 and 45,816.64

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Solution

The fourth proportional to 81,627.55, 112,645.08 and 45,816.64 is: 63,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,627.55 : 112,645.08 = 45,816.64 : x
  2. Step 2: Convert to fraction form
    81,627.55/112,645.08 = 45,816.64/x
  3. Step 3: Cross multiply
    81,627.55x = 112,645.08 × 45,816.64
  4. Step 4: Simplify right side
    81,627.55x = 5,161,018,796.52
  5. Step 5: Solve for x
    x = 5,161,018,796.52/81,627.55
  6. Step 6: Final answer
    x = 63,226.43

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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.