Home / 84,568.64-126,855.08-28,410.72

Finding the Fourth Proportional to 84,568.64, 126,855.08 and 28,410.72

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Solution

The fourth proportional to 84,568.64, 126,855.08 and 28,410.72 is: 42,616.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,568.64 : 126,855.08 = 28,410.72 : x
  2. Step 2: Convert to fraction form
    84,568.64/126,855.08 = 28,410.72/x
  3. Step 3: Cross multiply
    84,568.64x = 126,855.08 × 28,410.72
  4. Step 4: Simplify right side
    84,568.64x = 3,604,044,158.46
  5. Step 5: Solve for x
    x = 3,604,044,158.46/84,568.64
  6. Step 6: Final answer
    x = 42,616.79

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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.