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Finding the Fourth Proportional to 75,173.77, 103,710.86 and 42,910.20

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Solution

The fourth proportional to 75,173.77, 103,710.86 and 42,910.20 is: 59,199.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,173.77 : 103,710.86 = 42,910.20 : x
  2. Step 2: Convert to fraction form
    75,173.77/103,710.86 = 42,910.20/x
  3. Step 3: Cross multiply
    75,173.77x = 103,710.86 × 42,910.20
  4. Step 4: Simplify right side
    75,173.77x = 4,450,253,852.05
  5. Step 5: Solve for x
    x = 4,450,253,852.05/75,173.77
  6. Step 6: Final answer
    x = 59,199.56

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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.