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Finding the Fourth Proportional to 81,533.76, 112,517.70 and 49,263.87

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Solution

The fourth proportional to 81,533.76, 112,517.70 and 49,263.87 is: 67,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,533.76 : 112,517.70 = 49,263.87 : x
  2. Step 2: Convert to fraction form
    81,533.76/112,517.70 = 49,263.87/x
  3. Step 3: Cross multiply
    81,533.76x = 112,517.70 × 49,263.87
  4. Step 4: Simplify right side
    81,533.76x = 5,543,057,345.50
  5. Step 5: Solve for x
    x = 5,543,057,345.50/81,533.76
  6. Step 6: Final answer
    x = 67,984.81

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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.