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Finding the Fourth Proportional to 109,810.40, 164,722.80 and 30,927.20

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Solution

The fourth proportional to 109,810.40, 164,722.80 and 30,927.20 is: 46,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,810.40 : 164,722.80 = 30,927.20 : x
  2. Step 2: Convert to fraction form
    109,810.40/164,722.80 = 30,927.20/x
  3. Step 3: Cross multiply
    109,810.40x = 164,722.80 × 30,927.20
  4. Step 4: Simplify right side
    109,810.40x = 5,094,414,980.16
  5. Step 5: Solve for x
    x = 5,094,414,980.16/109,810.40
  6. Step 6: Final answer
    x = 46,392.83

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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.