Home / 81,164.52-121,756.50-28,563.12

Finding the Fourth Proportional to 81,164.52, 121,756.50 and 28,563.12

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Solution

The fourth proportional to 81,164.52, 121,756.50 and 28,563.12 is: 42,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.52 : 121,756.50 = 28,563.12 : x
  2. Step 2: Convert to fraction form
    81,164.52/121,756.50 = 28,563.12/x
  3. Step 3: Cross multiply
    81,164.52x = 121,756.50 × 28,563.12
  4. Step 4: Simplify right side
    81,164.52x = 3,477,745,520.28
  5. Step 5: Solve for x
    x = 3,477,745,520.28/81,164.52
  6. Step 6: Final answer
    x = 42,848.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.