Home / 81,617.87-112,632.66-45,807.88

Finding the Fourth Proportional to 81,617.87, 112,632.66 and 45,807.88

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Solution

The fourth proportional to 81,617.87, 112,632.66 and 45,807.88 is: 63,214.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.87 : 112,632.66 = 45,807.88 : x
  2. Step 2: Convert to fraction form
    81,617.87/112,632.66 = 45,807.88/x
  3. Step 3: Cross multiply
    81,617.87x = 112,632.66 × 45,807.88
  4. Step 4: Simplify right side
    81,617.87x = 5,159,463,852.99
  5. Step 5: Solve for x
    x = 5,159,463,852.99/81,617.87
  6. Step 6: Final answer
    x = 63,214.88

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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.