Home / 78,202.53-117,312.00-25,616.12

Finding the Fourth Proportional to 78,202.53, 117,312.00 and 25,616.12

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Solution

The fourth proportional to 78,202.53, 117,312.00 and 25,616.12 is: 38,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,202.53 : 117,312.00 = 25,616.12 : x
  2. Step 2: Convert to fraction form
    78,202.53/117,312.00 = 25,616.12/x
  3. Step 3: Cross multiply
    78,202.53x = 117,312.00 × 25,616.12
  4. Step 4: Simplify right side
    78,202.53x = 3,005,077,586.82
  5. Step 5: Solve for x
    x = 3,005,077,586.82/78,202.53
  6. Step 6: Final answer
    x = 38,426.86

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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.