Home / 42,787.64-64,197.90-17,821.01

Finding the Fourth Proportional to 42,787.64, 64,197.90 and 17,821.01

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Solution

The fourth proportional to 42,787.64, 64,197.90 and 17,821.01 is: 26,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,787.64 : 64,197.90 = 17,821.01 : x
  2. Step 2: Convert to fraction form
    42,787.64/64,197.90 = 17,821.01/x
  3. Step 3: Cross multiply
    42,787.64x = 64,197.90 × 17,821.01
  4. Step 4: Simplify right side
    42,787.64x = 1,144,071,417.88
  5. Step 5: Solve for x
    x = 1,144,071,417.88/42,787.64
  6. Step 6: Final answer
    x = 26,738.36

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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.