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Finding the Fourth Proportional to 82,041.80, 123,062.70 and 53,999.60

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Solution

The fourth proportional to 82,041.80, 123,062.70 and 53,999.60 is: 80,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,041.80 : 123,062.70 = 53,999.60 : x
  2. Step 2: Convert to fraction form
    82,041.80/123,062.70 = 53,999.60/x
  3. Step 3: Cross multiply
    82,041.80x = 123,062.70 × 53,999.60
  4. Step 4: Simplify right side
    82,041.80x = 6,645,336,574.92
  5. Step 5: Solve for x
    x = 6,645,336,574.92/82,041.80
  6. Step 6: Final answer
    x = 80,999.40

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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.