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Finding the Fourth Proportional to 84,280.48, 126,410.64 and 21,955.84

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Solution

The fourth proportional to 84,280.48, 126,410.64 and 21,955.84 is: 32,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,280.48 : 126,410.64 = 21,955.84 : x
  2. Step 2: Convert to fraction form
    84,280.48/126,410.64 = 21,955.84/x
  3. Step 3: Cross multiply
    84,280.48x = 126,410.64 × 21,955.84
  4. Step 4: Simplify right side
    84,280.48x = 2,775,451,786.14
  5. Step 5: Solve for x
    x = 2,775,451,786.14/84,280.48
  6. Step 6: Final answer
    x = 32,931.13

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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.