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Finding the Fourth Proportional to 73,388.27, 110,047.70 and 28,430.68

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Solution

The fourth proportional to 73,388.27, 110,047.70 and 28,430.68 is: 42,632.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,388.27 : 110,047.70 = 28,430.68 : x
  2. Step 2: Convert to fraction form
    73,388.27/110,047.70 = 28,430.68/x
  3. Step 3: Cross multiply
    73,388.27x = 110,047.70 × 28,430.68
  4. Step 4: Simplify right side
    73,388.27x = 3,128,730,739.39
  5. Step 5: Solve for x
    x = 3,128,730,739.39/73,388.27
  6. Step 6: Final answer
    x = 42,632.58

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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.