Home / 53,981.20-80,933.40-20,688.40

Finding the Fourth Proportional to 53,981.20, 80,933.40 and 20,688.40

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Solution

The fourth proportional to 53,981.20, 80,933.40 and 20,688.40 is: 31,017.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,981.20 : 80,933.40 = 20,688.40 : x
  2. Step 2: Convert to fraction form
    53,981.20/80,933.40 = 20,688.40/x
  3. Step 3: Cross multiply
    53,981.20x = 80,933.40 × 20,688.40
  4. Step 4: Simplify right side
    53,981.20x = 1,674,382,552.56
  5. Step 5: Solve for x
    x = 1,674,382,552.56/53,981.20
  6. Step 6: Final answer
    x = 31,017.88

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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.