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Finding the Fourth Proportional to 48,761.60, 73,142.40 and 19,169.60

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Solution

The fourth proportional to 48,761.60, 73,142.40 and 19,169.60 is: 28,754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,761.60 : 73,142.40 = 19,169.60 : x
  2. Step 2: Convert to fraction form
    48,761.60/73,142.40 = 19,169.60/x
  3. Step 3: Cross multiply
    48,761.60x = 73,142.40 × 19,169.60
  4. Step 4: Simplify right side
    48,761.60x = 1,402,110,551.04
  5. Step 5: Solve for x
    x = 1,402,110,551.04/48,761.60
  6. Step 6: Final answer
    x = 28,754.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.