Home / 81,284.23-121,768.59-59,898.14

Finding the Fourth Proportional to 81,284.23, 121,768.59 and 59,898.14

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Solution

The fourth proportional to 81,284.23, 121,768.59 and 59,898.14 is: 89,730.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,284.23 : 121,768.59 = 59,898.14 : x
  2. Step 2: Convert to fraction form
    81,284.23/121,768.59 = 59,898.14/x
  3. Step 3: Cross multiply
    81,284.23x = 121,768.59 × 59,898.14
  4. Step 4: Simplify right side
    81,284.23x = 7,293,711,442.58
  5. Step 5: Solve for x
    x = 7,293,711,442.58/81,284.23
  6. Step 6: Final answer
    x = 89,730.96

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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.