Home / 52,661.28-78,991.92-21,085.68

Finding the Fourth Proportional to 52,661.28, 78,991.92 and 21,085.68

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Solution

The fourth proportional to 52,661.28, 78,991.92 and 21,085.68 is: 31,628.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,661.28 : 78,991.92 = 21,085.68 : x
  2. Step 2: Convert to fraction form
    52,661.28/78,991.92 = 21,085.68/x
  3. Step 3: Cross multiply
    52,661.28x = 78,991.92 × 21,085.68
  4. Step 4: Simplify right side
    52,661.28x = 1,665,598,347.71
  5. Step 5: Solve for x
    x = 1,665,598,347.71/52,661.28
  6. Step 6: Final answer
    x = 31,628.52

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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.