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Finding the Fourth Proportional to 78,030.60, 116,989.96 and 33,054.96

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Solution

The fourth proportional to 78,030.60, 116,989.96 and 33,054.96 is: 49,558.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,030.60 : 116,989.96 = 33,054.96 : x
  2. Step 2: Convert to fraction form
    78,030.60/116,989.96 = 33,054.96/x
  3. Step 3: Cross multiply
    78,030.60x = 116,989.96 × 33,054.96
  4. Step 4: Simplify right side
    78,030.60x = 3,867,098,448.20
  5. Step 5: Solve for x
    x = 3,867,098,448.20/78,030.60
  6. Step 6: Final answer
    x = 49,558.74

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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.