Home / 54,075.12-81,125.40-17,139.12

Finding the Fourth Proportional to 54,075.12, 81,125.40 and 17,139.12

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Solution

The fourth proportional to 54,075.12, 81,125.40 and 17,139.12 is: 25,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,075.12 : 81,125.40 = 17,139.12 : x
  2. Step 2: Convert to fraction form
    54,075.12/81,125.40 = 17,139.12/x
  3. Step 3: Cross multiply
    54,075.12x = 81,125.40 × 17,139.12
  4. Step 4: Simplify right side
    54,075.12x = 1,390,417,965.65
  5. Step 5: Solve for x
    x = 1,390,417,965.65/54,075.12
  6. Step 6: Final answer
    x = 25,712.71

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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.