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Finding the Fourth Proportional to 40,237.48, 60,393.48 and 20,530.72

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Solution

The fourth proportional to 40,237.48, 60,393.48 and 20,530.72 is: 30,815.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,237.48 : 60,393.48 = 20,530.72 : x
  2. Step 2: Convert to fraction form
    40,237.48/60,393.48 = 20,530.72/x
  3. Step 3: Cross multiply
    40,237.48x = 60,393.48 × 20,530.72
  4. Step 4: Simplify right side
    40,237.48x = 1,239,921,627.71
  5. Step 5: Solve for x
    x = 1,239,921,627.71/40,237.48
  6. Step 6: Final answer
    x = 30,815.09

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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.