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Finding the Fourth Proportional to 75,124.56, 112,710.42 and 45,173.28

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Solution

The fourth proportional to 75,124.56, 112,710.42 and 45,173.28 is: 67,774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,124.56 : 112,710.42 = 45,173.28 : x
  2. Step 2: Convert to fraction form
    75,124.56/112,710.42 = 45,173.28/x
  3. Step 3: Cross multiply
    75,124.56x = 112,710.42 × 45,173.28
  4. Step 4: Simplify right side
    75,124.56x = 5,091,499,361.58
  5. Step 5: Solve for x
    x = 5,091,499,361.58/75,124.56
  6. Step 6: Final answer
    x = 67,774.10

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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.