Home / 42,787.85-64,181.70-11,623.10

Finding the Fourth Proportional to 42,787.85, 64,181.70 and 11,623.10

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Solution

The fourth proportional to 42,787.85, 64,181.70 and 11,623.10 is: 17,434.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,787.85 : 64,181.70 = 11,623.10 : x
  2. Step 2: Convert to fraction form
    42,787.85/64,181.70 = 11,623.10/x
  3. Step 3: Cross multiply
    42,787.85x = 64,181.70 × 11,623.10
  4. Step 4: Simplify right side
    42,787.85x = 745,989,996.36
  5. Step 5: Solve for x
    x = 745,989,996.36/42,787.85
  6. Step 6: Final answer
    x = 17,434.62

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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.