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Finding the Fourth Proportional to 82,118.80, 123,217.08 and 47,088.08

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Solution

The fourth proportional to 82,118.80, 123,217.08 and 47,088.08 is: 70,654.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,118.80 : 123,217.08 = 47,088.08 : x
  2. Step 2: Convert to fraction form
    82,118.80/123,217.08 = 47,088.08/x
  3. Step 3: Cross multiply
    82,118.80x = 123,217.08 × 47,088.08
  4. Step 4: Simplify right side
    82,118.80x = 5,802,055,720.41
  5. Step 5: Solve for x
    x = 5,802,055,720.41/82,118.80
  6. Step 6: Final answer
    x = 70,654.41

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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.