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Finding the Fourth Proportional to 81,182.76, 111,959.67 and 50,970.91

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Solution

The fourth proportional to 81,182.76, 111,959.67 and 50,970.91 is: 70,294.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,182.76 : 111,959.67 = 50,970.91 : x
  2. Step 2: Convert to fraction form
    81,182.76/111,959.67 = 50,970.91/x
  3. Step 3: Cross multiply
    81,182.76x = 111,959.67 × 50,970.91
  4. Step 4: Simplify right side
    81,182.76x = 5,706,686,263.20
  5. Step 5: Solve for x
    x = 5,706,686,263.20/81,182.76
  6. Step 6: Final answer
    x = 70,294.31

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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.