Home / 81,042.90-111,763.71-53,770.92

Finding the Fourth Proportional to 81,042.90, 111,763.71 and 53,770.92

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Solution

The fourth proportional to 81,042.90, 111,763.71 and 53,770.92 is: 74,153.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.90 : 111,763.71 = 53,770.92 : x
  2. Step 2: Convert to fraction form
    81,042.90/111,763.71 = 53,770.92/x
  3. Step 3: Cross multiply
    81,042.90x = 111,763.71 × 53,770.92
  4. Step 4: Simplify right side
    81,042.90x = 6,009,637,509.31
  5. Step 5: Solve for x
    x = 6,009,637,509.31/81,042.90
  6. Step 6: Final answer
    x = 74,153.78

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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.