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Finding the Fourth Proportional to 48,305.40, 72,470.70 and 18,724.20

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Solution

The fourth proportional to 48,305.40, 72,470.70 and 18,724.20 is: 28,091.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,305.40 : 72,470.70 = 18,724.20 : x
  2. Step 2: Convert to fraction form
    48,305.40/72,470.70 = 18,724.20/x
  3. Step 3: Cross multiply
    48,305.40x = 72,470.70 × 18,724.20
  4. Step 4: Simplify right side
    48,305.40x = 1,356,955,880.94
  5. Step 5: Solve for x
    x = 1,356,955,880.94/48,305.40
  6. Step 6: Final answer
    x = 28,091.18

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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.