Home / 42,972.87-64,417.39-18,020.42

Finding the Fourth Proportional to 42,972.87, 64,417.39 and 18,020.42

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Solution

The fourth proportional to 42,972.87, 64,417.39 and 18,020.42 is: 27,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,972.87 : 64,417.39 = 18,020.42 : x
  2. Step 2: Convert to fraction form
    42,972.87/64,417.39 = 18,020.42/x
  3. Step 3: Cross multiply
    42,972.87x = 64,417.39 × 18,020.42
  4. Step 4: Simplify right side
    42,972.87x = 1,160,828,297.53
  5. Step 5: Solve for x
    x = 1,160,828,297.53/42,972.87
  6. Step 6: Final answer
    x = 27,013.05

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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.