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Finding the Fourth Proportional to 73,726.80, 110,590.20 and 21,141.60

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Solution

The fourth proportional to 73,726.80, 110,590.20 and 21,141.60 is: 31,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,726.80 : 110,590.20 = 21,141.60 : x
  2. Step 2: Convert to fraction form
    73,726.80/110,590.20 = 21,141.60/x
  3. Step 3: Cross multiply
    73,726.80x = 110,590.20 × 21,141.60
  4. Step 4: Simplify right side
    73,726.80x = 2,338,053,772.32
  5. Step 5: Solve for x
    x = 2,338,053,772.32/73,726.80
  6. Step 6: Final answer
    x = 31,712.40

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1.5x scale

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.