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Finding the Fourth Proportional to 48,128.80, 67,426.40 and 48,128.80

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Solution

The fourth proportional to 48,128.80, 67,426.40 and 48,128.80 is: 67,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.80 : 67,426.40 = 48,128.80 : x
  2. Step 2: Convert to fraction form
    48,128.80/67,426.40 = 48,128.80/x
  3. Step 3: Cross multiply
    48,128.80x = 67,426.40 × 48,128.80
  4. Step 4: Simplify right side
    48,128.80x = 3,245,151,720.32
  5. Step 5: Solve for x
    x = 3,245,151,720.32/48,128.80
  6. Step 6: Final answer
    x = 67,426.40

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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.