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Finding the Fourth Proportional to 48,989.20, 68,740.40 and 48,989.20

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Solution

The fourth proportional to 48,989.20, 68,740.40 and 48,989.20 is: 68,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,989.20 : 68,740.40 = 48,989.20 : x
  2. Step 2: Convert to fraction form
    48,989.20/68,740.40 = 48,989.20/x
  3. Step 3: Cross multiply
    48,989.20x = 68,740.40 × 48,989.20
  4. Step 4: Simplify right side
    48,989.20x = 3,367,537,203.68
  5. Step 5: Solve for x
    x = 3,367,537,203.68/48,989.20
  6. Step 6: Final answer
    x = 68,740.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.