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Finding the Fourth Proportional to 78,795.52, 108,756.48 and 45,280.96

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Solution

The fourth proportional to 78,795.52, 108,756.48 and 45,280.96 is: 62,498.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,795.52 : 108,756.48 = 45,280.96 : x
  2. Step 2: Convert to fraction form
    78,795.52/108,756.48 = 45,280.96/x
  3. Step 3: Cross multiply
    78,795.52x = 108,756.48 × 45,280.96
  4. Step 4: Simplify right side
    78,795.52x = 4,924,597,820.62
  5. Step 5: Solve for x
    x = 4,924,597,820.62/78,795.52
  6. Step 6: Final answer
    x = 62,498.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.