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Finding the Fourth Proportional to 79,444.56, 119,166.69 and 20,280.21

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Solution

The fourth proportional to 79,444.56, 119,166.69 and 20,280.21 is: 30,420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,444.56 : 119,166.69 = 20,280.21 : x
  2. Step 2: Convert to fraction form
    79,444.56/119,166.69 = 20,280.21/x
  3. Step 3: Cross multiply
    79,444.56x = 119,166.69 × 20,280.21
  4. Step 4: Simplify right side
    79,444.56x = 2,416,725,498.20
  5. Step 5: Solve for x
    x = 2,416,725,498.20/79,444.56
  6. Step 6: Final answer
    x = 30,420.28

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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.