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Finding the Fourth Proportional to 82,285.61, 123,428.40 and 28,965.03

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Solution

The fourth proportional to 82,285.61, 123,428.40 and 28,965.03 is: 43,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,285.61 : 123,428.40 = 28,965.03 : x
  2. Step 2: Convert to fraction form
    82,285.61/123,428.40 = 28,965.03/x
  3. Step 3: Cross multiply
    82,285.61x = 123,428.40 × 28,965.03
  4. Step 4: Simplify right side
    82,285.61x = 3,575,106,737.38
  5. Step 5: Solve for x
    x = 3,575,106,737.38/82,285.61
  6. Step 6: Final answer
    x = 43,447.54

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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.