Home / 42,808.60-64,169.70-19,451.80

Finding the Fourth Proportional to 42,808.60, 64,169.70 and 19,451.80

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Solution

The fourth proportional to 42,808.60, 64,169.70 and 19,451.80 is: 29,158.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,808.60 : 64,169.70 = 19,451.80 : x
  2. Step 2: Convert to fraction form
    42,808.60/64,169.70 = 19,451.80/x
  3. Step 3: Cross multiply
    42,808.60x = 64,169.70 × 19,451.80
  4. Step 4: Simplify right side
    42,808.60x = 1,248,216,170.46
  5. Step 5: Solve for x
    x = 1,248,216,170.46/42,808.60
  6. Step 6: Final answer
    x = 29,158.07

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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.