Home / 60,685.28-90,970.32-21,216.68

Finding the Fourth Proportional to 60,685.28, 90,970.32 and 21,216.68

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Solution

The fourth proportional to 60,685.28, 90,970.32 and 21,216.68 is: 31,804.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,685.28 : 90,970.32 = 21,216.68 : x
  2. Step 2: Convert to fraction form
    60,685.28/90,970.32 = 21,216.68/x
  3. Step 3: Cross multiply
    60,685.28x = 90,970.32 × 21,216.68
  4. Step 4: Simplify right side
    60,685.28x = 1,930,088,168.94
  5. Step 5: Solve for x
    x = 1,930,088,168.94/60,685.28
  6. Step 6: Final answer
    x = 31,804.88

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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.