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Finding the Fourth Proportional to 35,448.57, 48,918.52 and 20,340.90

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Solution

The fourth proportional to 35,448.57, 48,918.52 and 20,340.90 is: 28,070.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,448.57 : 48,918.52 = 20,340.90 : x
  2. Step 2: Convert to fraction form
    35,448.57/48,918.52 = 20,340.90/x
  3. Step 3: Cross multiply
    35,448.57x = 48,918.52 × 20,340.90
  4. Step 4: Simplify right side
    35,448.57x = 995,046,634.48
  5. Step 5: Solve for x
    x = 995,046,634.48/35,448.57
  6. Step 6: Final answer
    x = 28,070.15

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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.