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Finding the Fourth Proportional to 82,600.80, 123,901.20 and 23,438.40

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Solution

The fourth proportional to 82,600.80, 123,901.20 and 23,438.40 is: 35,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,600.80 : 123,901.20 = 23,438.40 : x
  2. Step 2: Convert to fraction form
    82,600.80/123,901.20 = 23,438.40/x
  3. Step 3: Cross multiply
    82,600.80x = 123,901.20 × 23,438.40
  4. Step 4: Simplify right side
    82,600.80x = 2,904,045,886.08
  5. Step 5: Solve for x
    x = 2,904,045,886.08/82,600.80
  6. Step 6: Final answer
    x = 35,157.60

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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.