Home / 81,180.39-112,030.21-45,372.72

Finding the Fourth Proportional to 81,180.39, 112,030.21 and 45,372.72

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Solution

The fourth proportional to 81,180.39, 112,030.21 and 45,372.72 is: 62,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,180.39 : 112,030.21 = 45,372.72 : x
  2. Step 2: Convert to fraction form
    81,180.39/112,030.21 = 45,372.72/x
  3. Step 3: Cross multiply
    81,180.39x = 112,030.21 × 45,372.72
  4. Step 4: Simplify right side
    81,180.39x = 5,083,115,123.01
  5. Step 5: Solve for x
    x = 5,083,115,123.01/81,180.39
  6. Step 6: Final answer
    x = 62,615.06

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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.