Home / 81,719.83-112,767.58-45,915.22

Finding the Fourth Proportional to 81,719.83, 112,767.58 and 45,915.22

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Solution

The fourth proportional to 81,719.83, 112,767.58 and 45,915.22 is: 63,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,719.83 : 112,767.58 = 45,915.22 : x
  2. Step 2: Convert to fraction form
    81,719.83/112,767.58 = 45,915.22/x
  3. Step 3: Cross multiply
    81,719.83x = 112,767.58 × 45,915.22
  4. Step 4: Simplify right side
    81,719.83x = 5,177,748,244.57
  5. Step 5: Solve for x
    x = 5,177,748,244.57/81,719.83
  6. Step 6: Final answer
    x = 63,359.75

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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.