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Finding the Fourth Proportional to 75,427.80, 104,078.80 and 43,590.55

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Solution

The fourth proportional to 75,427.80, 104,078.80 and 43,590.55 is: 60,148.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,427.80 : 104,078.80 = 43,590.55 : x
  2. Step 2: Convert to fraction form
    75,427.80/104,078.80 = 43,590.55/x
  3. Step 3: Cross multiply
    75,427.80x = 104,078.80 × 43,590.55
  4. Step 4: Simplify right side
    75,427.80x = 4,536,852,395.54
  5. Step 5: Solve for x
    x = 4,536,852,395.54/75,427.80
  6. Step 6: Final answer
    x = 60,148.28

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1.5x scale

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.