Home / 42,987.39-64,464.68-16,685.97

Finding the Fourth Proportional to 42,987.39, 64,464.68 and 16,685.97

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Solution

The fourth proportional to 42,987.39, 64,464.68 and 16,685.97 is: 25,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,987.39 : 64,464.68 = 16,685.97 : x
  2. Step 2: Convert to fraction form
    42,987.39/64,464.68 = 16,685.97/x
  3. Step 3: Cross multiply
    42,987.39x = 64,464.68 × 16,685.97
  4. Step 4: Simplify right side
    42,987.39x = 1,075,655,633.11
  5. Step 5: Solve for x
    x = 1,075,655,633.11/42,987.39
  6. Step 6: Final answer
    x = 25,022.59

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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.