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Finding the Fourth Proportional to 72,415.70, 108,623.55 and 48,914.90

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Solution

The fourth proportional to 72,415.70, 108,623.55 and 48,914.90 is: 73,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,415.70 : 108,623.55 = 48,914.90 : x
  2. Step 2: Convert to fraction form
    72,415.70/108,623.55 = 48,914.90/x
  3. Step 3: Cross multiply
    72,415.70x = 108,623.55 × 48,914.90
  4. Step 4: Simplify right side
    72,415.70x = 5,313,310,085.90
  5. Step 5: Solve for x
    x = 5,313,310,085.90/72,415.70
  6. Step 6: Final answer
    x = 73,372.35

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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.