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Finding the Fourth Proportional to 75,300.70, 103,918.24 and 45,080.20

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Solution

The fourth proportional to 75,300.70, 103,918.24 and 45,080.20 is: 62,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,300.70 : 103,918.24 = 45,080.20 : x
  2. Step 2: Convert to fraction form
    75,300.70/103,918.24 = 45,080.20/x
  3. Step 3: Cross multiply
    75,300.70x = 103,918.24 × 45,080.20
  4. Step 4: Simplify right side
    75,300.70x = 4,684,655,042.85
  5. Step 5: Solve for x
    x = 4,684,655,042.85/75,300.70
  6. Step 6: Final answer
    x = 62,212.64

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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.