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Finding the Fourth Proportional to 48,287, 66,639.90 and 28,418.84

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Solution

The fourth proportional to 48,287, 66,639.90 and 28,418.84 is: 39,220.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,287 : 66,639.90 = 28,418.84 : x
  2. Step 2: Convert to fraction form
    48,287/66,639.90 = 28,418.84/x
  3. Step 3: Cross multiply
    48,287x = 66,639.90 × 28,418.84
  4. Step 4: Simplify right side
    48,287x = 1,893,828,655.72
  5. Step 5: Solve for x
    x = 1,893,828,655.72/48,287
  6. Step 6: Final answer
    x = 39,220.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.