Home / 75,075.49-103,689.21-51,160.65

Finding the Fourth Proportional to 75,075.49, 103,689.21 and 51,160.65

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Solution

The fourth proportional to 75,075.49, 103,689.21 and 51,160.65 is: 70,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,075.49 : 103,689.21 = 51,160.65 : x
  2. Step 2: Convert to fraction form
    75,075.49/103,689.21 = 51,160.65/x
  3. Step 3: Cross multiply
    75,075.49x = 103,689.21 × 51,160.65
  4. Step 4: Simplify right side
    75,075.49x = 5,304,807,381.59
  5. Step 5: Solve for x
    x = 5,304,807,381.59/75,075.49
  6. Step 6: Final answer
    x = 70,659.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.