Home / 81,209.22-112,068.21-45,399.06

Finding the Fourth Proportional to 81,209.22, 112,068.21 and 45,399.06

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Solution

The fourth proportional to 81,209.22, 112,068.21 and 45,399.06 is: 62,650.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,209.22 : 112,068.21 = 45,399.06 : x
  2. Step 2: Convert to fraction form
    81,209.22/112,068.21 = 45,399.06/x
  3. Step 3: Cross multiply
    81,209.22x = 112,068.21 × 45,399.06
  4. Step 4: Simplify right side
    81,209.22x = 5,087,791,389.88
  5. Step 5: Solve for x
    x = 5,087,791,389.88/81,209.22
  6. Step 6: Final answer
    x = 62,650.42

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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.