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Finding the Fourth Proportional to 78,752.98, 118,094.81 and 28,820.10

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Solution

The fourth proportional to 78,752.98, 118,094.81 and 28,820.10 is: 43,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,752.98 : 118,094.81 = 28,820.10 : x
  2. Step 2: Convert to fraction form
    78,752.98/118,094.81 = 28,820.10/x
  3. Step 3: Cross multiply
    78,752.98x = 118,094.81 × 28,820.10
  4. Step 4: Simplify right side
    78,752.98x = 3,403,504,233.68
  5. Step 5: Solve for x
    x = 3,403,504,233.68/78,752.98
  6. Step 6: Final answer
    x = 43,217.47

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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.