Home / 79,153.74-109,232.35-42,855.56

Finding the Fourth Proportional to 79,153.74, 109,232.35 and 42,855.56

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Solution

The fourth proportional to 79,153.74, 109,232.35 and 42,855.56 is: 59,140.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,153.74 : 109,232.35 = 42,855.56 : x
  2. Step 2: Convert to fraction form
    79,153.74/109,232.35 = 42,855.56/x
  3. Step 3: Cross multiply
    79,153.74x = 109,232.35 × 42,855.56
  4. Step 4: Simplify right side
    79,153.74x = 4,681,213,900.12
  5. Step 5: Solve for x
    x = 4,681,213,900.12/79,153.74
  6. Step 6: Final answer
    x = 59,140.78

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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.