Home / 42,965.88-64,465.20-16,689.12

Finding the Fourth Proportional to 42,965.88, 64,465.20 and 16,689.12

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Solution

The fourth proportional to 42,965.88, 64,465.20 and 16,689.12 is: 25,040.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,965.88 : 64,465.20 = 16,689.12 : x
  2. Step 2: Convert to fraction form
    42,965.88/64,465.20 = 16,689.12/x
  3. Step 3: Cross multiply
    42,965.88x = 64,465.20 × 16,689.12
  4. Step 4: Simplify right side
    42,965.88x = 1,075,867,458.62
  5. Step 5: Solve for x
    x = 1,075,867,458.62/42,965.88
  6. Step 6: Final answer
    x = 25,040.04

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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.