Home / 81,626.48-112,646.64-45,819.28

Finding the Fourth Proportional to 81,626.48, 112,646.64 and 45,819.28

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Solution

The fourth proportional to 81,626.48, 112,646.64 and 45,819.28 is: 63,231.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,626.48 : 112,646.64 = 45,819.28 : x
  2. Step 2: Convert to fraction form
    81,626.48/112,646.64 = 45,819.28/x
  3. Step 3: Cross multiply
    81,626.48x = 112,646.64 × 45,819.28
  4. Step 4: Simplify right side
    81,626.48x = 5,161,387,939.22
  5. Step 5: Solve for x
    x = 5,161,387,939.22/81,626.48
  6. Step 6: Final answer
    x = 63,231.78

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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.