Home / 81,725.95-122,539.51-53,284.02

Finding the Fourth Proportional to 81,725.95, 122,539.51 and 53,284.02

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Solution

The fourth proportional to 81,725.95, 122,539.51 and 53,284.02 is: 79,893.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,725.95 : 122,539.51 = 53,284.02 : x
  2. Step 2: Convert to fraction form
    81,725.95/122,539.51 = 53,284.02/x
  3. Step 3: Cross multiply
    81,725.95x = 122,539.51 × 53,284.02
  4. Step 4: Simplify right side
    81,725.95x = 6,529,397,701.63
  5. Step 5: Solve for x
    x = 6,529,397,701.63/81,725.95
  6. Step 6: Final answer
    x = 79,893.81

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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.