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Finding the Fourth Proportional to 48,730.80, 67,279.80 and 39,799.74

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Solution

The fourth proportional to 48,730.80, 67,279.80 and 39,799.74 is: 54,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,730.80 : 67,279.80 = 39,799.74 : x
  2. Step 2: Convert to fraction form
    48,730.80/67,279.80 = 39,799.74/x
  3. Step 3: Cross multiply
    48,730.80x = 67,279.80 × 39,799.74
  4. Step 4: Simplify right side
    48,730.80x = 2,677,718,547.25
  5. Step 5: Solve for x
    x = 2,677,718,547.25/48,730.80
  6. Step 6: Final answer
    x = 54,949.20

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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.