Home / 81,043.90-111,765.09-53,771.92

Finding the Fourth Proportional to 81,043.90, 111,765.09 and 53,771.92

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Solution

The fourth proportional to 81,043.90, 111,765.09 and 53,771.92 is: 74,155.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,043.90 : 111,765.09 = 53,771.92 : x
  2. Step 2: Convert to fraction form
    81,043.90/111,765.09 = 53,771.92/x
  3. Step 3: Cross multiply
    81,043.90x = 111,765.09 × 53,771.92
  4. Step 4: Simplify right side
    81,043.90x = 6,009,823,478.27
  5. Step 5: Solve for x
    x = 6,009,823,478.27/81,043.90
  6. Step 6: Final answer
    x = 74,155.16

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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.