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Finding the Fourth Proportional to 48,388.80, 66,774.48 and 28,246.80

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Solution

The fourth proportional to 48,388.80, 66,774.48 and 28,246.80 is: 38,979.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,388.80 : 66,774.48 = 28,246.80 : x
  2. Step 2: Convert to fraction form
    48,388.80/66,774.48 = 28,246.80/x
  3. Step 3: Cross multiply
    48,388.80x = 66,774.48 × 28,246.80
  4. Step 4: Simplify right side
    48,388.80x = 1,886,165,381.66
  5. Step 5: Solve for x
    x = 1,886,165,381.66/48,388.80
  6. Step 6: Final answer
    x = 38,979.38

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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.