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Finding the Fourth Proportional to 79,455.80, 119,280.90 and 43,945.40

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Solution

The fourth proportional to 79,455.80, 119,280.90 and 43,945.40 is: 65,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,455.80 : 119,280.90 = 43,945.40 : x
  2. Step 2: Convert to fraction form
    79,455.80/119,280.90 = 43,945.40/x
  3. Step 3: Cross multiply
    79,455.80x = 119,280.90 × 43,945.40
  4. Step 4: Simplify right side
    79,455.80x = 5,241,846,862.86
  5. Step 5: Solve for x
    x = 5,241,846,862.86/79,455.80
  6. Step 6: Final answer
    x = 65,971.86

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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.