Home / 81,479.16-112,440.88-45,669.18

Finding the Fourth Proportional to 81,479.16, 112,440.88 and 45,669.18

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Solution

The fourth proportional to 81,479.16, 112,440.88 and 45,669.18 is: 63,023.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,479.16 : 112,440.88 = 45,669.18 : x
  2. Step 2: Convert to fraction form
    81,479.16/112,440.88 = 45,669.18/x
  3. Step 3: Cross multiply
    81,479.16x = 112,440.88 × 45,669.18
  4. Step 4: Simplify right side
    81,479.16x = 5,135,082,788.08
  5. Step 5: Solve for x
    x = 5,135,082,788.08/81,479.16
  6. Step 6: Final answer
    x = 63,023.27

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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.