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Finding the Fourth Proportional to 82,124.80, 123,244.80 and 52,614.40

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Solution

The fourth proportional to 82,124.80, 123,244.80 and 52,614.40 is: 78,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,124.80 : 123,244.80 = 52,614.40 : x
  2. Step 2: Convert to fraction form
    82,124.80/123,244.80 = 52,614.40/x
  3. Step 3: Cross multiply
    82,124.80x = 123,244.80 × 52,614.40
  4. Step 4: Simplify right side
    82,124.80x = 6,484,451,205.12
  5. Step 5: Solve for x
    x = 6,484,451,205.12/82,124.80
  6. Step 6: Final answer
    x = 78,958.50

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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.