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Finding the Fourth Proportional to 48,240, 66,579.12 and 30,337.68

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Solution

The fourth proportional to 48,240, 66,579.12 and 30,337.68 is: 41,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,240 : 66,579.12 = 30,337.68 : x
  2. Step 2: Convert to fraction form
    48,240/66,579.12 = 30,337.68/x
  3. Step 3: Cross multiply
    48,240x = 66,579.12 × 30,337.68
  4. Step 4: Simplify right side
    48,240x = 2,019,856,037.24
  5. Step 5: Solve for x
    x = 2,019,856,037.24/48,240
  6. Step 6: Final answer
    x = 41,870.98

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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.