Home / 42,051.79-62,990.20-19,882.90

Finding the Fourth Proportional to 42,051.79, 62,990.20 and 19,882.90

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Solution

The fourth proportional to 42,051.79, 62,990.20 and 19,882.90 is: 29,782.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,051.79 : 62,990.20 = 19,882.90 : x
  2. Step 2: Convert to fraction form
    42,051.79/62,990.20 = 19,882.90/x
  3. Step 3: Cross multiply
    42,051.79x = 62,990.20 × 19,882.90
  4. Step 4: Simplify right side
    42,051.79x = 1,252,427,847.58
  5. Step 5: Solve for x
    x = 1,252,427,847.58/42,051.79
  6. Step 6: Final answer
    x = 29,782.99

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1.5x scale

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.