Home / 53,708.34-80,562.54-20,420.72

Finding the Fourth Proportional to 53,708.34, 80,562.54 and 20,420.72

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Solution

The fourth proportional to 53,708.34, 80,562.54 and 20,420.72 is: 30,631.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,708.34 : 80,562.54 = 20,420.72 : x
  2. Step 2: Convert to fraction form
    53,708.34/80,562.54 = 20,420.72/x
  3. Step 3: Cross multiply
    53,708.34x = 80,562.54 × 20,420.72
  4. Step 4: Simplify right side
    53,708.34x = 1,645,144,669.02
  5. Step 5: Solve for x
    x = 1,645,144,669.02/53,708.34
  6. Step 6: Final answer
    x = 30,631.08

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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.