Home / 71,579.72-98,783.16-39,748.64

Finding the Fourth Proportional to 71,579.72, 98,783.16 and 39,748.64

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Solution

The fourth proportional to 71,579.72, 98,783.16 and 39,748.64 is: 54,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,579.72 : 98,783.16 = 39,748.64 : x
  2. Step 2: Convert to fraction form
    71,579.72/98,783.16 = 39,748.64/x
  3. Step 3: Cross multiply
    71,579.72x = 98,783.16 × 39,748.64
  4. Step 4: Simplify right side
    71,579.72x = 3,926,496,264.90
  5. Step 5: Solve for x
    x = 3,926,496,264.90/71,579.72
  6. Step 6: Final answer
    x = 54,854.87

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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.