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Finding the Fourth Proportional to 67,619.80, 93,046.28 and 65,565.37

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Solution

The fourth proportional to 67,619.80, 93,046.28 and 65,565.37 is: 90,219.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,619.80 : 93,046.28 = 65,565.37 : x
  2. Step 2: Convert to fraction form
    67,619.80/93,046.28 = 65,565.37/x
  3. Step 3: Cross multiply
    67,619.80x = 93,046.28 × 65,565.37
  4. Step 4: Simplify right side
    67,619.80x = 6,100,613,775.32
  5. Step 5: Solve for x
    x = 6,100,613,775.32/67,619.80
  6. Step 6: Final answer
    x = 90,219.34

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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.