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Finding the Fourth Proportional to 73,703.76, 110,554.20 and 21,105.60

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Solution

The fourth proportional to 73,703.76, 110,554.20 and 21,105.60 is: 31,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,703.76 : 110,554.20 = 21,105.60 : x
  2. Step 2: Convert to fraction form
    73,703.76/110,554.20 = 21,105.60/x
  3. Step 3: Cross multiply
    73,703.76x = 110,554.20 × 21,105.60
  4. Step 4: Simplify right side
    73,703.76x = 2,333,312,723.52
  5. Step 5: Solve for x
    x = 2,333,312,723.52/73,703.76
  6. Step 6: Final answer
    x = 31,657.99

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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.