Home / 42,763.88-64,159.68-20,574.36

Finding the Fourth Proportional to 42,763.88, 64,159.68 and 20,574.36

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Solution

The fourth proportional to 42,763.88, 64,159.68 and 20,574.36 is: 30,868.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,763.88 : 64,159.68 = 20,574.36 : x
  2. Step 2: Convert to fraction form
    42,763.88/64,159.68 = 20,574.36/x
  3. Step 3: Cross multiply
    42,763.88x = 64,159.68 × 20,574.36
  4. Step 4: Simplify right side
    42,763.88x = 1,320,044,353.80
  5. Step 5: Solve for x
    x = 1,320,044,353.80/42,763.88
  6. Step 6: Final answer
    x = 30,868.21

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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.