Home / 72,862.45-109,308.41-30,742.64

Finding the Fourth Proportional to 72,862.45, 109,308.41 and 30,742.64

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Solution

The fourth proportional to 72,862.45, 109,308.41 and 30,742.64 is: 46,120.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.45 : 109,308.41 = 30,742.64 : x
  2. Step 2: Convert to fraction form
    72,862.45/109,308.41 = 30,742.64/x
  3. Step 3: Cross multiply
    72,862.45x = 109,308.41 × 30,742.64
  4. Step 4: Simplify right side
    72,862.45x = 3,360,428,943.89
  5. Step 5: Solve for x
    x = 3,360,428,943.89/72,862.45
  6. Step 6: Final answer
    x = 46,120.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.