Home / 81,663.02-122,529.19-39,574.43

Finding the Fourth Proportional to 81,663.02, 122,529.19 and 39,574.43

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Solution

The fourth proportional to 81,663.02, 122,529.19 and 39,574.43 is: 59,378.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,663.02 : 122,529.19 = 39,574.43 : x
  2. Step 2: Convert to fraction form
    81,663.02/122,529.19 = 39,574.43/x
  3. Step 3: Cross multiply
    81,663.02x = 122,529.19 × 39,574.43
  4. Step 4: Simplify right side
    81,663.02x = 4,849,022,141.03
  5. Step 5: Solve for x
    x = 4,849,022,141.03/81,663.02
  6. Step 6: Final answer
    x = 59,378.44

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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.