Home / 53,959.56-80,931.96-20,688

Finding the Fourth Proportional to 53,959.56, 80,931.96 and 20,688

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Solution

The fourth proportional to 53,959.56, 80,931.96 and 20,688 is: 31,029.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,959.56 : 80,931.96 = 20,688 : x
  2. Step 2: Convert to fraction form
    53,959.56/80,931.96 = 20,688/x
  3. Step 3: Cross multiply
    53,959.56x = 80,931.96 × 20,688
  4. Step 4: Simplify right side
    53,959.56x = 1,674,320,388.48
  5. Step 5: Solve for x
    x = 1,674,320,388.48/53,959.56
  6. Step 6: Final answer
    x = 31,029.17

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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.