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Finding the Fourth Proportional to 73,390.40, 110,085.39 and 20,800.34

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Solution

The fourth proportional to 73,390.40, 110,085.39 and 20,800.34 is: 31,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,390.40 : 110,085.39 = 20,800.34 : x
  2. Step 2: Convert to fraction form
    73,390.40/110,085.39 = 20,800.34/x
  3. Step 3: Cross multiply
    73,390.40x = 110,085.39 × 20,800.34
  4. Step 4: Simplify right side
    73,390.40x = 2,289,812,990.61
  5. Step 5: Solve for x
    x = 2,289,812,990.61/73,390.40
  6. Step 6: Final answer
    x = 31,200.45

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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.