Home / 42,885.17-64,340.99-19,212.65

Finding the Fourth Proportional to 42,885.17, 64,340.99 and 19,212.65

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Solution

The fourth proportional to 42,885.17, 64,340.99 and 19,212.65 is: 28,824.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,885.17 : 64,340.99 = 19,212.65 : x
  2. Step 2: Convert to fraction form
    42,885.17/64,340.99 = 19,212.65/x
  3. Step 3: Cross multiply
    42,885.17x = 64,340.99 × 19,212.65
  4. Step 4: Simplify right side
    42,885.17x = 1,236,160,921.52
  5. Step 5: Solve for x
    x = 1,236,160,921.52/42,885.17
  6. Step 6: Final answer
    x = 28,824.90

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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.