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Finding the Fourth Proportional to 48,330, 66,695.58 and 28,200.78

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Solution

The fourth proportional to 48,330, 66,695.58 and 28,200.78 is: 38,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,330 : 66,695.58 = 28,200.78 : x
  2. Step 2: Convert to fraction form
    48,330/66,695.58 = 28,200.78/x
  3. Step 3: Cross multiply
    48,330x = 66,695.58 × 28,200.78
  4. Step 4: Simplify right side
    48,330x = 1,880,867,378.55
  5. Step 5: Solve for x
    x = 1,880,867,378.55/48,330
  6. Step 6: Final answer
    x = 38,917.18

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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.