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Finding the Fourth Proportional to 78,756.76, 118,114.08 and 53,792.56

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Solution

The fourth proportional to 78,756.76, 118,114.08 and 53,792.56 is: 80,674.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756.76 : 118,114.08 = 53,792.56 : x
  2. Step 2: Convert to fraction form
    78,756.76/118,114.08 = 53,792.56/x
  3. Step 3: Cross multiply
    78,756.76x = 118,114.08 × 53,792.56
  4. Step 4: Simplify right side
    78,756.76x = 6,353,658,735.24
  5. Step 5: Solve for x
    x = 6,353,658,735.24/78,756.76
  6. Step 6: Final answer
    x = 80,674.46

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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.