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Finding the Fourth Proportional to 82,011.40, 122,940.30 and 64,232.20

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Solution

The fourth proportional to 82,011.40, 122,940.30 and 64,232.20 is: 96,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,011.40 : 122,940.30 = 64,232.20 : x
  2. Step 2: Convert to fraction form
    82,011.40/122,940.30 = 64,232.20/x
  3. Step 3: Cross multiply
    82,011.40x = 122,940.30 × 64,232.20
  4. Step 4: Simplify right side
    82,011.40x = 7,896,725,937.66
  5. Step 5: Solve for x
    x = 7,896,725,937.66/82,011.40
  6. Step 6: Final answer
    x = 96,288.15

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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.