Home / 80,869.19-121,039.21-59,516.17

Finding the Fourth Proportional to 80,869.19, 121,039.21 and 59,516.17

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Solution

The fourth proportional to 80,869.19, 121,039.21 and 59,516.17 is: 89,079.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,869.19 : 121,039.21 = 59,516.17 : x
  2. Step 2: Convert to fraction form
    80,869.19/121,039.21 = 59,516.17/x
  3. Step 3: Cross multiply
    80,869.19x = 121,039.21 × 59,516.17
  4. Step 4: Simplify right side
    80,869.19x = 7,203,789,970.82
  5. Step 5: Solve for x
    x = 7,203,789,970.82/80,869.19
  6. Step 6: Final answer
    x = 89,079.54

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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.