Home / 53,688.40-80,564.26-20,436.44

Finding the Fourth Proportional to 53,688.40, 80,564.26 and 20,436.44

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Solution

The fourth proportional to 53,688.40, 80,564.26 and 20,436.44 is: 30,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,688.40 : 80,564.26 = 20,436.44 : x
  2. Step 2: Convert to fraction form
    53,688.40/80,564.26 = 20,436.44/x
  3. Step 3: Cross multiply
    53,688.40x = 80,564.26 × 20,436.44
  4. Step 4: Simplify right side
    53,688.40x = 1,646,446,665.63
  5. Step 5: Solve for x
    x = 1,646,446,665.63/53,688.40
  6. Step 6: Final answer
    x = 30,666.71

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1.5x scale

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.