Home / 81,390.72-112,233.60-60,214.08

Finding the Fourth Proportional to 81,390.72, 112,233.60 and 60,214.08

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Solution

The fourth proportional to 81,390.72, 112,233.60 and 60,214.08 is: 83,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,390.72 : 112,233.60 = 60,214.08 : x
  2. Step 2: Convert to fraction form
    81,390.72/112,233.60 = 60,214.08/x
  3. Step 3: Cross multiply
    81,390.72x = 112,233.60 × 60,214.08
  4. Step 4: Simplify right side
    81,390.72x = 6,758,042,969.09
  5. Step 5: Solve for x
    x = 6,758,042,969.09/81,390.72
  6. Step 6: Final answer
    x = 83,032.11

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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.