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Finding the Fourth Proportional to 79,749.60, 119,624.40 and 72,362.40

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Solution

The fourth proportional to 79,749.60, 119,624.40 and 72,362.40 is: 108,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,749.60 : 119,624.40 = 72,362.40 : x
  2. Step 2: Convert to fraction form
    79,749.60/119,624.40 = 72,362.40/x
  3. Step 3: Cross multiply
    79,749.60x = 119,624.40 × 72,362.40
  4. Step 4: Simplify right side
    79,749.60x = 8,656,308,682.56
  5. Step 5: Solve for x
    x = 8,656,308,682.56/79,749.60
  6. Step 6: Final answer
    x = 108,543.60

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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.