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Finding the Fourth Proportional to 82,100.93, 123,113.12 and 42,647.45

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Solution

The fourth proportional to 82,100.93, 123,113.12 and 42,647.45 is: 63,951.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,100.93 : 123,113.12 = 42,647.45 : x
  2. Step 2: Convert to fraction form
    82,100.93/123,113.12 = 42,647.45/x
  3. Step 3: Cross multiply
    82,100.93x = 123,113.12 × 42,647.45
  4. Step 4: Simplify right side
    82,100.93x = 5,250,459,800.74
  5. Step 5: Solve for x
    x = 5,250,459,800.74/82,100.93
  6. Step 6: Final answer
    x = 63,951.29

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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.