Home / 81,386.64-122,081.58-53,484.57

Finding the Fourth Proportional to 81,386.64, 122,081.58 and 53,484.57

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Solution

The fourth proportional to 81,386.64, 122,081.58 and 53,484.57 is: 80,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,386.64 : 122,081.58 = 53,484.57 : x
  2. Step 2: Convert to fraction form
    81,386.64/122,081.58 = 53,484.57/x
  3. Step 3: Cross multiply
    81,386.64x = 122,081.58 × 53,484.57
  4. Step 4: Simplify right side
    81,386.64x = 6,529,480,811.22
  5. Step 5: Solve for x
    x = 6,529,480,811.22/81,386.64
  6. Step 6: Final answer
    x = 80,227.92

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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.