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Finding the Fourth Proportional to 73,705, 110,558.70 and 21,114.28

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Solution

The fourth proportional to 73,705, 110,558.70 and 21,114.28 is: 31,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,705 : 110,558.70 = 21,114.28 : x
  2. Step 2: Convert to fraction form
    73,705/110,558.70 = 21,114.28/x
  3. Step 3: Cross multiply
    73,705x = 110,558.70 × 21,114.28
  4. Step 4: Simplify right side
    73,705x = 2,334,367,348.24
  5. Step 5: Solve for x
    x = 2,334,367,348.24/73,705
  6. Step 6: Final answer
    x = 31,671.76

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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.