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Finding the Fourth Proportional to 53,483.61, 80,250 and 20,215.23

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Solution

The fourth proportional to 53,483.61, 80,250 and 20,215.23 is: 30,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,483.61 : 80,250 = 20,215.23 : x
  2. Step 2: Convert to fraction form
    53,483.61/80,250 = 20,215.23/x
  3. Step 3: Cross multiply
    53,483.61x = 80,250 × 20,215.23
  4. Step 4: Simplify right side
    53,483.61x = 1,622,272,207.50
  5. Step 5: Solve for x
    x = 1,622,272,207.50/53,483.61
  6. Step 6: Final answer
    x = 30,332.14

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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.