Home / 78,617.50-117,889.95-25,299.56

Finding the Fourth Proportional to 78,617.50, 117,889.95 and 25,299.56

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Solution

The fourth proportional to 78,617.50, 117,889.95 and 25,299.56 is: 37,937.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,617.50 : 117,889.95 = 25,299.56 : x
  2. Step 2: Convert to fraction form
    78,617.50/117,889.95 = 25,299.56/x
  3. Step 3: Cross multiply
    78,617.50x = 117,889.95 × 25,299.56
  4. Step 4: Simplify right side
    78,617.50x = 2,982,563,447.58
  5. Step 5: Solve for x
    x = 2,982,563,447.58/78,617.50
  6. Step 6: Final answer
    x = 37,937.65

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1.5x scale

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.