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Finding the Fourth Proportional to 80,430.81, 111,001.28 and 44,620.20

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Solution

The fourth proportional to 80,430.81, 111,001.28 and 44,620.20 is: 61,579.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,430.81 : 111,001.28 = 44,620.20 : x
  2. Step 2: Convert to fraction form
    80,430.81/111,001.28 = 44,620.20/x
  3. Step 3: Cross multiply
    80,430.81x = 111,001.28 × 44,620.20
  4. Step 4: Simplify right side
    80,430.81x = 4,952,899,090.76
  5. Step 5: Solve for x
    x = 4,952,899,090.76/80,430.81
  6. Step 6: Final answer
    x = 61,579.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.