Home / 54,159.16-81,230.34-20,894.80

Finding the Fourth Proportional to 54,159.16, 81,230.34 and 20,894.80

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Solution

The fourth proportional to 54,159.16, 81,230.34 and 20,894.80 is: 31,338.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,159.16 : 81,230.34 = 20,894.80 : x
  2. Step 2: Convert to fraction form
    54,159.16/81,230.34 = 20,894.80/x
  3. Step 3: Cross multiply
    54,159.16x = 81,230.34 × 20,894.80
  4. Step 4: Simplify right side
    54,159.16x = 1,697,291,708.23
  5. Step 5: Solve for x
    x = 1,697,291,708.23/54,159.16
  6. Step 6: Final answer
    x = 31,338.96

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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.