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Finding the Fourth Proportional to 81,979.76, 122,957.36 and 22,809.36

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Solution

The fourth proportional to 81,979.76, 122,957.36 and 22,809.36 is: 34,210.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,979.76 : 122,957.36 = 22,809.36 : x
  2. Step 2: Convert to fraction form
    81,979.76/122,957.36 = 22,809.36/x
  3. Step 3: Cross multiply
    81,979.76x = 122,957.36 × 22,809.36
  4. Step 4: Simplify right side
    81,979.76x = 2,804,578,688.89
  5. Step 5: Solve for x
    x = 2,804,578,688.89/81,979.76
  6. Step 6: Final answer
    x = 34,210.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.