Home / 43,644.78-65,376.35-42,139.17

Finding the Fourth Proportional to 43,644.78, 65,376.35 and 42,139.17

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Solution

The fourth proportional to 43,644.78, 65,376.35 and 42,139.17 is: 63,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,644.78 : 65,376.35 = 42,139.17 : x
  2. Step 2: Convert to fraction form
    43,644.78/65,376.35 = 42,139.17/x
  3. Step 3: Cross multiply
    43,644.78x = 65,376.35 × 42,139.17
  4. Step 4: Simplify right side
    43,644.78x = 2,754,905,126.63
  5. Step 5: Solve for x
    x = 2,754,905,126.63/43,644.78
  6. Step 6: Final answer
    x = 63,121.07

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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.