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Finding the Fourth Proportional to 72,405.62, 108,460.62 and 37,271.48

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Solution

The fourth proportional to 72,405.62, 108,460.62 and 37,271.48 is: 55,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,405.62 : 108,460.62 = 37,271.48 : x
  2. Step 2: Convert to fraction form
    72,405.62/108,460.62 = 37,271.48/x
  3. Step 3: Cross multiply
    72,405.62x = 108,460.62 × 37,271.48
  4. Step 4: Simplify right side
    72,405.62x = 4,042,487,829.12
  5. Step 5: Solve for x
    x = 4,042,487,829.12/72,405.62
  6. Step 6: Final answer
    x = 55,831.13

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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.