Home / 66,278.40-99,334.36-39,644.04

Finding the Fourth Proportional to 66,278.40, 99,334.36 and 39,644.04

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Solution

The fourth proportional to 66,278.40, 99,334.36 and 39,644.04 is: 59,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,278.40 : 99,334.36 = 39,644.04 : x
  2. Step 2: Convert to fraction form
    66,278.40/99,334.36 = 39,644.04/x
  3. Step 3: Cross multiply
    66,278.40x = 99,334.36 × 39,644.04
  4. Step 4: Simplify right side
    66,278.40x = 3,938,015,341.21
  5. Step 5: Solve for x
    x = 3,938,015,341.21/66,278.40
  6. Step 6: Final answer
    x = 59,416.27

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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.