Home / 81,431.08-112,383.16-45,627.48

Finding the Fourth Proportional to 81,431.08, 112,383.16 and 45,627.48

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Solution

The fourth proportional to 81,431.08, 112,383.16 and 45,627.48 is: 62,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.08 : 112,383.16 = 45,627.48 : x
  2. Step 2: Convert to fraction form
    81,431.08/112,383.16 = 45,627.48/x
  3. Step 3: Cross multiply
    81,431.08x = 112,383.16 × 45,627.48
  4. Step 4: Simplify right side
    81,431.08x = 5,127,760,385.24
  5. Step 5: Solve for x
    x = 5,127,760,385.24/81,431.08
  6. Step 6: Final answer
    x = 62,970.56

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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.