Home / 78,434.38-117,651.90-19,270.06

Finding the Fourth Proportional to 78,434.38, 117,651.90 and 19,270.06

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Solution

The fourth proportional to 78,434.38, 117,651.90 and 19,270.06 is: 28,905.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,434.38 : 117,651.90 = 19,270.06 : x
  2. Step 2: Convert to fraction form
    78,434.38/117,651.90 = 19,270.06/x
  3. Step 3: Cross multiply
    78,434.38x = 117,651.90 × 19,270.06
  4. Step 4: Simplify right side
    78,434.38x = 2,267,159,172.11
  5. Step 5: Solve for x
    x = 2,267,159,172.11/78,434.38
  6. Step 6: Final answer
    x = 28,905.17

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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.