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Finding the Fourth Proportional to 48,878.40, 68,281.80 and 48,878.40

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Solution

The fourth proportional to 48,878.40, 68,281.80 and 48,878.40 is: 68,281.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,878.40 : 68,281.80 = 48,878.40 : x
  2. Step 2: Convert to fraction form
    48,878.40/68,281.80 = 48,878.40/x
  3. Step 3: Cross multiply
    48,878.40x = 68,281.80 × 48,878.40
  4. Step 4: Simplify right side
    48,878.40x = 3,337,505,133.12
  5. Step 5: Solve for x
    x = 3,337,505,133.12/48,878.40
  6. Step 6: Final answer
    x = 68,281.80

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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.