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Finding the Fourth Proportional to 79,728.40, 119,362.20 and 48,624.40

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Solution

The fourth proportional to 79,728.40, 119,362.20 and 48,624.40 is: 72,796.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,728.40 : 119,362.20 = 48,624.40 : x
  2. Step 2: Convert to fraction form
    79,728.40/119,362.20 = 48,624.40/x
  3. Step 3: Cross multiply
    79,728.40x = 119,362.20 × 48,624.40
  4. Step 4: Simplify right side
    79,728.40x = 5,803,915,357.68
  5. Step 5: Solve for x
    x = 5,803,915,357.68/79,728.40
  6. Step 6: Final answer
    x = 72,796.08

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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.