Home / 42,808.80-64,184.40-19,423.20

Finding the Fourth Proportional to 42,808.80, 64,184.40 and 19,423.20

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Solution

The fourth proportional to 42,808.80, 64,184.40 and 19,423.20 is: 29,121.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,808.80 : 64,184.40 = 19,423.20 : x
  2. Step 2: Convert to fraction form
    42,808.80/64,184.40 = 19,423.20/x
  3. Step 3: Cross multiply
    42,808.80x = 64,184.40 × 19,423.20
  4. Step 4: Simplify right side
    42,808.80x = 1,246,666,438.08
  5. Step 5: Solve for x
    x = 1,246,666,438.08/42,808.80
  6. Step 6: Final answer
    x = 29,121.73

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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.