Home / 78,748.76-118,102.08-53,784.56

Finding the Fourth Proportional to 78,748.76, 118,102.08 and 53,784.56

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Solution

The fourth proportional to 78,748.76, 118,102.08 and 53,784.56 is: 80,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,748.76 : 118,102.08 = 53,784.56 : x
  2. Step 2: Convert to fraction form
    78,748.76/118,102.08 = 53,784.56/x
  3. Step 3: Cross multiply
    78,748.76x = 118,102.08 × 53,784.56
  4. Step 4: Simplify right side
    78,748.76x = 6,352,068,407.88
  5. Step 5: Solve for x
    x = 6,352,068,407.88/78,748.76
  6. Step 6: Final answer
    x = 80,662.46

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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.