Home / 42,751.05-64,133.46-13,168.85

Finding the Fourth Proportional to 42,751.05, 64,133.46 and 13,168.85

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Solution

The fourth proportional to 42,751.05, 64,133.46 and 13,168.85 is: 19,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,751.05 : 64,133.46 = 13,168.85 : x
  2. Step 2: Convert to fraction form
    42,751.05/64,133.46 = 13,168.85/x
  3. Step 3: Cross multiply
    42,751.05x = 64,133.46 × 13,168.85
  4. Step 4: Simplify right side
    42,751.05x = 844,564,075.05
  5. Step 5: Solve for x
    x = 844,564,075.05/42,751.05
  6. Step 6: Final answer
    x = 19,755.40

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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.