Home / 78,283.90-117,381.84-25,688.98

Finding the Fourth Proportional to 78,283.90, 117,381.84 and 25,688.98

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Solution

The fourth proportional to 78,283.90, 117,381.84 and 25,688.98 is: 38,519.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,283.90 : 117,381.84 = 25,688.98 : x
  2. Step 2: Convert to fraction form
    78,283.90/117,381.84 = 25,688.98/x
  3. Step 3: Cross multiply
    78,283.90x = 117,381.84 × 25,688.98
  4. Step 4: Simplify right side
    78,283.90x = 3,015,419,740.12
  5. Step 5: Solve for x
    x = 3,015,419,740.12/78,283.90
  6. Step 6: Final answer
    x = 38,519.03

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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.