Home / 81,579.90-112,579.56-45,769.14

Finding the Fourth Proportional to 81,579.90, 112,579.56 and 45,769.14

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Solution

The fourth proportional to 81,579.90, 112,579.56 and 45,769.14 is: 63,161.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,579.90 : 112,579.56 = 45,769.14 : x
  2. Step 2: Convert to fraction form
    81,579.90/112,579.56 = 45,769.14/x
  3. Step 3: Cross multiply
    81,579.90x = 112,579.56 × 45,769.14
  4. Step 4: Simplify right side
    81,579.90x = 5,152,669,642.78
  5. Step 5: Solve for x
    x = 5,152,669,642.78/81,579.90
  6. Step 6: Final answer
    x = 63,161.02

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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.