Home / 81,297.28-112,189.20-45,487.12

Finding the Fourth Proportional to 81,297.28, 112,189.20 and 45,487.12

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Solution

The fourth proportional to 81,297.28, 112,189.20 and 45,487.12 is: 62,771.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,297.28 : 112,189.20 = 45,487.12 : x
  2. Step 2: Convert to fraction form
    81,297.28/112,189.20 = 45,487.12/x
  3. Step 3: Cross multiply
    81,297.28x = 112,189.20 × 45,487.12
  4. Step 4: Simplify right side
    81,297.28x = 5,103,163,603.10
  5. Step 5: Solve for x
    x = 5,103,163,603.10/81,297.28
  6. Step 6: Final answer
    x = 62,771.64

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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.