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Finding the Fourth Proportional to 48,612.87, 67,116.72 and 39,681.60

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Solution

The fourth proportional to 48,612.87, 67,116.72 and 39,681.60 is: 54,785.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,612.87 : 67,116.72 = 39,681.60 : x
  2. Step 2: Convert to fraction form
    48,612.87/67,116.72 = 39,681.60/x
  3. Step 3: Cross multiply
    48,612.87x = 67,116.72 × 39,681.60
  4. Step 4: Simplify right side
    48,612.87x = 2,663,298,836.35
  5. Step 5: Solve for x
    x = 2,663,298,836.35/48,612.87
  6. Step 6: Final answer
    x = 54,785.88

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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.